what is the ratio of said triangle

- anonymous

what is the ratio of said triangle

- katieb

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- dan815

Tan b = Opposite side / adjascent side

- dan815

remember SOH CAH TOA

- dan815

Sin B = O/H
Cos B = A/H
Tan B = O/A

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## More answers

- dan815

close

- dan815

you are doing A/O

- dan815

o=opposite
a=adjecsent
h=hypotenuse

- dan815

|dw:1368527552204:dw|

- dan815

the line opposite the right angle is always hypotenuse

- dan815

yes

- anonymous

haha thanks took me a while but I think I got ti

- dan815

dont worry about it, it seems a little confusing at first, but its gonna be really easy soon

- anonymous

I have a few more if you don't mind? It's really hard for me to find help

- dan815

well u know how to do it now dont you

- dan815

just say the word Sohcahtoa

- dan815

okay this is a soh cah toa problem again

- dan815

what is sin x and cos x

- dan815

|dw:1368527902011:dw|

- dan815

hello?

- anonymous

sorry browser closed out on me

- dan815

thats fine, so look at that diagram

- dan815

remember SohCah Toa

- agent0smith

@KierseyClemons did you pick AB/BC for the first one?
That's not correct for tanB... tan is opposite/adjacent - the opposite is AC, the adjacent is AB.

- anonymous

Oh ok wow thanks

- anonymous

so OH

- anonymous

For the second?

- anonymous

I mean A

- dan815

yes good now what is OA = ?

- dan815

O/A = ?

- dan815

soh cah toa
remember soh cah toa

- anonymous

wait what does that mean?

- dan815

S oh --->Sin of Angle = O/H
C ah ---->Cos of Angle = A/H
T oa ---> Tan of angle = O/A

- dan815

just remember it like 1 word, dont forget it

- dan815

SOHCAHTOA, you will use this forever

- anonymous

kinda hard to remember that But i'll try

- dan815

just think of it as 1 word xD

- dan815

you just met a friend today, her name was Sohcahtoa are you gonna forget her name >_>

- agent0smith

Also remember this one too:\[\huge\tan x =\frac{ \sin x }{ \cos x }\]

- dan815

she just proved that lol

- anonymous

?

- dan815

nope

- agent0smith

Opposite of A is 15. Adjacent is 8.

- dan815

look at the line that is not touching angle A that is opposite

- dan815

yep

- anonymous

Yay! I'm getting there lol

- agent0smith

I wouldn't have given you a medal if you were wrong :P

- anonymous

So is it the same thing for cos?

- agent0smith

Cos is adjacent/hypotenuse.

- dan815

okay hold on

- dan815

|dw:1368528962087:dw|

- anonymous

k|dw:1368529054886:dw|

- agent0smith

|dw:1368529107736:dw|
Hypotenuse is always the longest side, and always opposite the right angle (90 degree angle)

- agent0smith

Adjacent is the side that touches the angle (NOT the hypotenuse)

- dan815

yes

- dan815

remember that triangle and
remember your friends name
SOHCAHTOA
the spelling will tell you
O= opposite
H = hypotenuse
A=adajscent

- dan815

no

- dan815

|dw:1368529372429:dw|

- dan815

|dw:1368529425551:dw|

- dan815

look at this diagram can you lable the opposite and adjacent side to b?

- anonymous

|dw:1368529463166:dw|

- dan815

here, just watch this http://www.youtube.com/watch?v=F21S9Wpi0y8

- dan815

he will explain to you clearly :)

- agent0smith

hypotenuse is always the longest side. Always. It doesn't change, ever.

- dan815

yes, but please watch that video

- anonymous

I did :) that's how I got that lol

- dan815

ok good :)

- dan815

you can watch all our math from that guy, he will teach you everything u need to know

- anonymous

I'll put onne more up and I think Ive gtten it down pretty much

- agent0smith

Yes.

- anonymous

:)

- agent0smith

To make sure, tell us cosA and tanA

- anonymous

Of that same angle right?

- dan815

yes

- agent0smith

Then, tell us sinB, cosB and tanB.

- dan815

agent smith is a real tutor, u got home work already

- anonymous

cosA= 5/13 tanA= 12/5

- agent0smith

Excellent. Now: sinB, cosB and tanB.

- anonymous

Sinb=5/13 cosB= 12/13 tanB= 5/12

- dan815

good job:)

- agent0smith

Excellent!

- anonymous

Yay! I got it lol that video really helped! You guys are awesome!

- dan815

ya keep watching that guys stuff! he is a very good teacher

- anonymous

I will thanks! Just subscribed lol

- dan815

i still watch him and iam in university

- dan815

lol

- anonymous

I'm deff gonna be watching him when I get there lol

- dan815

yep, what grade are you in?

- anonymous

10th :)

- dan815

ah ok still a long ways off! i remember those grade 10 days

- dan815

hahah too fresh

- anonymous

Haha!

- dan815

just remember studies are really easy!! dont forget it and ull continue to do good.. the day you believe its too hard, u will start to do bad!

- anonymous

I might need help with these still tho

##### 1 Attachment

- anonymous

because it's not a picture

- agent0smith

For that you might want to use a 30-60-90 triangle:
http://www.freemathhelp.com/images/lessons/triangle306090-3.gif

- anonymous

Thank you!

- agent0smith

Cos 30, cos 60, sin30, sin60 ... these should all be easy to find from that picture.
If you need cos 45 or sin45, use this: http://www.biology.arizona.edu/biomath/tutorials/trigonometric/graphics/trig_45_45_90.gif

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