mckenzieandjesus
  • mckenzieandjesus
what is the tangent ratio for
Mathematics
  • Stacey Warren - Expert brainly.com
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jamiebookeater
  • jamiebookeater
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
mckenzieandjesus
  • mckenzieandjesus
|dw:1435093915953:dw|
freckles
  • freckles
is H the same as h?
mckenzieandjesus
  • mckenzieandjesus
yes

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freckles
  • freckles
ok do you know what side is not touching angle H (this is the opposite side) what measurement does this side have?
mckenzieandjesus
  • mckenzieandjesus
5?
freckles
  • freckles
yes the opposite side measurement is 5 now we just need to identify the adjacent side and it's measurement
freckles
  • freckles
the adjacent side is the side touching the angle (that isn't the hyp)
mckenzieandjesus
  • mckenzieandjesus
12?
freckles
  • freckles
that is right
freckles
  • freckles
now you just put your opp/adj and you have your tangent ratio
freckles
  • freckles
for angle h that is :)
freckles
  • freckles
or H
freckles
  • freckles
since H=h
mckenzieandjesus
  • mckenzieandjesus
do i do 5/12
freckles
  • freckles
yep
mckenzieandjesus
  • mckenzieandjesus
it says 0.4166666667
freckles
  • freckles
I would leave it as just 5/12
freckles
  • freckles
are you suppose to round it ?
mckenzieandjesus
  • mckenzieandjesus
oh 5/12 is the answer lol
mckenzieandjesus
  • mckenzieandjesus
no lol
freckles
  • freckles
yes we already found the tangent of angle h earlier it look like you were trying to round the answer
mckenzieandjesus
  • mckenzieandjesus
Thank you!(: can u help me with one more?
freckles
  • freckles
maybe
freckles
  • freckles
:p
mckenzieandjesus
  • mckenzieandjesus
i thought u were telling me to divide the two lol
mckenzieandjesus
  • mckenzieandjesus
sorry got confused but the answer is 5/12
freckles
  • freckles
well 5/12 is a fraction or a division of 5 by 12 but 5/12 is as pretty as the answer will come for that one since it is a repeating decimal
freckles
  • freckles
but anyways what is your other qustion
mckenzieandjesus
  • mckenzieandjesus
yeah i see that now thanks
mckenzieandjesus
  • mckenzieandjesus
it is triangle ABC, AB= 3 and AC=9. Find M
freckles
  • freckles
is this another right triangle?
mckenzieandjesus
  • mckenzieandjesus
|dw:1435094633296:dw|
mckenzieandjesus
  • mckenzieandjesus
yes
freckles
  • freckles
|dw:1435094708365:dw|
mckenzieandjesus
  • mckenzieandjesus
i think
freckles
  • freckles
yes that is a right triangle (it has a 90 deg angle there)
mckenzieandjesus
  • mckenzieandjesus
ok
freckles
  • freckles
anyways can you identify the sides that are given with respect to the angle in question (that angle being B)
freckles
  • freckles
the words I want you to use are: opposite adjacent hyp
freckles
  • freckles
|dw:1435094797116:dw| what side is this in the picture?
mckenzieandjesus
  • mckenzieandjesus
opposite?
freckles
  • freckles
now you are suppose to be looking at the angle B and I'm asking about the side whose measurement is 3
freckles
  • freckles
that side is actually touching the angle in question
mckenzieandjesus
  • mckenzieandjesus
adjacent?
freckles
  • freckles
yes!
freckles
  • freckles
|dw:1435094881006:dw| now what about the side whose measurement is 9
mckenzieandjesus
  • mckenzieandjesus
ok so 3 adjacent and opposite 9 and hyp b?
freckles
  • freckles
the hyp is the side BC ( the hyp is the side always opposite the 90 deg angle)
freckles
  • freckles
but yes to your other questions
mckenzieandjesus
  • mckenzieandjesus
oh bc i ment
freckles
  • freckles
so we are given opp and adj measurements so I suggest using the tangent ratio again
mckenzieandjesus
  • mckenzieandjesus
3/9?
freckles
  • freckles
|dw:1435094982296:dw|
freckles
  • freckles
opp is 9 and adj is 3 not the other way around
mckenzieandjesus
  • mckenzieandjesus
oh so 9/3
freckles
  • freckles
yes tan=opp/adj
mckenzieandjesus
  • mckenzieandjesus
do i divide?
freckles
  • freckles
amyways you want to solve that equation above and actually yeah it is pretty easy to find a prettier form for 9/3 we call that 3 tan(B)=3
freckles
  • freckles
now you want to solve for B
freckles
  • freckles
so take arctan( ) of both sides
freckles
  • freckles
\[\tan(B)=3 \implies B=\arctan(3)\]
mckenzieandjesus
  • mckenzieandjesus
how would i solve that on calculator?
mckenzieandjesus
  • mckenzieandjesus
my answer choices are 58, 18, 52, 72
freckles
  • freckles
well sometimes the arctan( ) can be done by pressing shift (or 2nd) and then the tan button
mckenzieandjesus
  • mckenzieandjesus
so put tan(3) then what?
freckles
  • freckles
no
freckles
  • freckles
arctan(3)
mckenzieandjesus
  • mckenzieandjesus
i dont have arctan on my calc
freckles
  • freckles
you should see arctan( ) above tan on your calculator
mckenzieandjesus
  • mckenzieandjesus
theres in above tan
freckles
  • freckles
like in maybe a different color
freckles
  • freckles
in?
freckles
  • freckles
what kind of calculator do you have?
mckenzieandjesus
  • mckenzieandjesus
yea the button says in
freckles
  • freckles
maybe I can find a picture of your calculator online and tell you how to use it
mckenzieandjesus
  • mckenzieandjesus
it says casio fx-115ES PLUS
mckenzieandjesus
  • mckenzieandjesus
OK
freckles
  • freckles
according to this calculator you should see arctan( ) above tan( ) they just call it \[\tan^{-1}[ F]\] both of these are the inverse functions of tan they are the same function just different notation
freckles
  • freckles
it is below the Ln key that you call in
freckles
  • freckles
to access the tan^(-1) thing you need to press shift
mckenzieandjesus
  • mckenzieandjesus
got it
mckenzieandjesus
  • mckenzieandjesus
i got 79.5
mckenzieandjesus
  • mckenzieandjesus
oh it was ln not in oops
freckles
  • freckles
you did 3 then arctan( ) and you got 79.5?
mckenzieandjesus
  • mckenzieandjesus
79.51672353
freckles
  • freckles
you should do something like this: second tan 3 or it might be the other way on yours 3 second tan
freckles
  • freckles
http://www.wolframalpha.com/input/?i=arctan%283%29
mckenzieandjesus
  • mckenzieandjesus
it tan^-1 then 3
freckles
  • freckles
you should be getting 71.57 deg
mckenzieandjesus
  • mckenzieandjesus
weird.. nope i got that number above and i typed it in exactly that way..
mckenzieandjesus
  • mckenzieandjesus
so the answer is 72?
freckles
  • freckles
yea but it is important you figure out your calculator
freckles
  • freckles
you might have to use it on a test
mckenzieandjesus
  • mckenzieandjesus
well i typed it in right.
freckles
  • freckles
so when you typed it all in it said this: \\[\tan^{-1}(3)\]
freckles
  • freckles
no other things in it
mckenzieandjesus
  • mckenzieandjesus
yep
mckenzieandjesus
  • mckenzieandjesus
without /
freckles
  • freckles
lol that is not suppose to be there
mckenzieandjesus
  • mckenzieandjesus
ok lol but yep thats what i typed
freckles
  • freckles
ok hmmm: I looked up your little support pdf for your calculator it says you should do this to find arctan(3): shift tan ) =
mckenzieandjesus
  • mckenzieandjesus
i did that too
freckles
  • freckles
well cookies!
mckenzieandjesus
  • mckenzieandjesus
help please? i believe its 35. A child lies on the ground and looks up at the top of a 17-ft tree nearby. The child is 14 ft away from the tree. What is the angle of elevation from the child to the top of the tree? Round to the nearest whole degree.
mckenzieandjesus
  • mckenzieandjesus
yeah thats really weird
mckenzieandjesus
  • mckenzieandjesus
1 Attachment
mckenzieandjesus
  • mckenzieandjesus
actually i think i got that one but need help with my last question
freckles
  • freckles
ok if you insist
mckenzieandjesus
  • mckenzieandjesus
Find the value of x to the nearest tenth. 6.0 8.0 10.9 13.3 |dw:1435096370432:dw|
freckles
  • freckles
and I did get a different answer for that previous one
freckles
  • freckles
well you are given the hyp measurement so you can think about using either sin of cos
freckles
  • freckles
sin or cos*
freckles
  • freckles
let's look at the angle whose measurement is 53 deg
freckles
  • freckles
what is the side whose measurement is x called? choices: adjacent opposite hyp
mckenzieandjesus
  • mckenzieandjesus
cos i believe
mckenzieandjesus
  • mckenzieandjesus
you did what was it?
mckenzieandjesus
  • mckenzieandjesus
adjacent?
freckles
  • freckles
I have gotten arctan(17/14) for the previous one I wonder if you are getting something different again on your calculator for that and for this question |dw:1435096613252:dw| you can not call this adjacent (it isn't touching the angle that I asked you to look at)
mckenzieandjesus
  • mckenzieandjesus
for the child one? opposite sorry
freckles
  • freckles
yes and yes
freckles
  • freckles
let's talk about one problem at a time
freckles
  • freckles
we will come back to the child one (because you know it might get confusing )
freckles
  • freckles
|dw:1435096741024:dw| that one side is always the hyp no matter what angle we decide to look at
freckles
  • freckles
anyways opp/hyp you should think sin function
mckenzieandjesus
  • mckenzieandjesus
the only answers i have fot the child one is 55 degrees, 35 degrees, 51 degrees, and 39 degrees.
mckenzieandjesus
  • mckenzieandjesus
got*
freckles
  • freckles
\[\sin(53^o)=\frac{x}{10}\]
freckles
  • freckles
yes arctan(17/14) does give one of those answers
freckles
  • freckles
|dw:1435096879182:dw|
mckenzieandjesus
  • mckenzieandjesus
its 51 degrees i thought it was either that or 35 degrees and went with 35 oops thank u!
mckenzieandjesus
  • mckenzieandjesus
so for the other question do i type sin(53) in?
freckles
  • freckles
well you need to multiply both sides by 10 to get x by itself
freckles
  • freckles
and yes you can type in sin(53) but you will need to multiply that result by 10
mckenzieandjesus
  • mckenzieandjesus
so 7.39631095?
mckenzieandjesus
  • mckenzieandjesus
would it be 8.0?
freckles
  • freckles
that is almost kinda close to what I got I have 7.986 blah blah
freckles
  • freckles
which is pretty darn close to 8 we got to figure out what is going on with your calculator
freckles
  • freckles
what does your calc say when you enter in just sin(53)
mckenzieandjesus
  • mckenzieandjesus
0.739631095
freckles
  • freckles
hmmm...
freckles
  • freckles
that is really weird should be getting 0.7986355100
mckenzieandjesus
  • mckenzieandjesus
but the real answer that comes up on that site link u gave me is showing what u got
mckenzieandjesus
  • mckenzieandjesus
Yeah i dont know whats wrong with this calculator.. maybe thats why ive gotten answers wrong many times on homework
mckenzieandjesus
  • mckenzieandjesus
The answer is 8.0 then but i really dont know what my calc is doing
freckles
  • freckles
yeah the answer is 8
freckles
  • freckles
i have no double about that
freckles
  • freckles
and your mode is in deg?
freckles
  • freckles
just figured out your problem
freckles
  • freckles
I was able to duplicate your answer for sin(53)
freckles
  • freckles
not degrees
freckles
  • freckles
change the mode and you fixed your problemd
freckles
  • freckles
you have your mode in grads* we need degrees let's see if I can give instructions --- hmmm... you should see mod then deg (and that is what you want but looking it up)
freckles
  • freckles
oh you left :p
campbell_st
  • campbell_st
if you want to change to degrees Press shift setup(Mode) then choose 3 Deg
mckenzieandjesus
  • mckenzieandjesus
im here
mckenzieandjesus
  • mckenzieandjesus
ok i just changed my mode.
mckenzieandjesus
  • mckenzieandjesus
yay the answer is right on my calc now. thank you so much !

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