Determine the measure of x

- anonymous

Determine the measure of x

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- anonymous

|dw:1358388607551:dw|

- anonymous

Using trigg .. how would you determine the value of x ?

- Kuoministers

use cos rule

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- anonymous

yee but how would I plug everything in.. I did it on my test and got it wrong :/

- Kuoministers

you just plug it in LOL!!!
make sure when you get your answer you need to do inverse cos?

- Kuoministers

what did you get as answer?
and what is real answer?

- anonymous

lmaao I sound dumb but its actually confusing to me :$ I did it and he wrote "bad form" ? I got 1 out of 3 marks .

- Kuoministers

can you pls show me your working out?

- Kuoministers

you gotta make sure that 17cm is C

- anonymous

yee i put 17 cm as c .. im confused as to how you know its c ?

- Kuoministers

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- anonymous

ohh okk !

- Kuoministers

you want to find x right? so x has to be c and opposite x is C got it!!??

- Kuoministers

try again and lets see what answer you got?

- anonymous

ok im gonna try it

- anonymous

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- anonymous

Is this correct? @kuoministers

- anonymous

when i got the decimal, i did the inverse of cos

- Kuoministers

YES!!! but it needs to be in degrees. still right

- anonymous

YES! thank you, its gonna help alot for my exam tommoro :)

- Kuoministers

cheers :)

- Kuoministers

ill give you another tip

- anonymous

Please do!

- Kuoministers

if the side is the longest the angle will also be the largest
because often question ask to find the largest angle

- Kuoministers

the angle opposite to that side sorry

- anonymous

ok understood, thank you!

- Kuoministers

eg... on your question the angle opposite 21 will be the largest. which is angle y

- anonymous

ok wait I have another question, give me a few more mins please

- anonymous

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- Kuoministers

for this you need the sin rule

- anonymous

does this have the same kind of concept?

- anonymous

okk

- Kuoministers

you need to know all the sin and cos rules

- Kuoministers

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- anonymous

okk I understand that very well now
how about for this question ? how would you solve it.. it has 2 parts

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- anonymous

it includes the angle of depression

- Kuoministers

ahaha this question is long :P

- Kuoministers

- Kuoministers

that angle is 8 degree btw

- anonymous

I knooow LOOL :p sorrrry .. i have liek a million questions but I dont wanna be annoying! honestly my teacher's no help at all and I have my exam tommoroe :$ Thank you soo much for your help tho!

- anonymous

ohh ok

- Kuoministers

- Kuoministers

do you know how to solve it now?
or do i need to go further?

- anonymous

Mind going further? How did you get 8 ?

- Kuoministers

my bad its 98 IM SORRY >.<

- anonymous

yes that makes more sence :)

- Kuoministers

im solving 4 question at once and my own HW...

- Kuoministers

- anonymous

WOOW you can multitask x2

- Kuoministers

calculus homework isnt fun... try to avoid it :D

- anonymous

I have to take calculus and functions and all that jazz .. I want to be a dentist ! we need all that LOL *sigh*

- Kuoministers

you are in year 9-10 i presume?

- Kuoministers

oh understand how to do part a) now?

- anonymous

using cos rule for the triangle in red will help get the distance right ?

- Kuoministers

yes

- anonymous

yees and yees 10

- Kuoministers

sorry if its extremely messy now

- anonymous

no dw its not! and okk I understand now.
Im going to try solving it on my own now and will ask questions if I get stuck:)

- Kuoministers

to find b) it would be similar from finding a)
gl with getting the correct answer

- Kuoministers

sure :)

- Kuoministers

you can see anytime if im online and message me if your my fan :P

- anonymous

ahhaha will do! You were great help btw thaanks

- Kuoministers

hey :)

- anonymous

hahhaa help me !! :(

- Kuoministers

sure

- Kuoministers

now you can work it out?

- Kuoministers

im going out for lunch soon :)
so ill try to make it quick

- Kuoministers

- anonymous

x = 1.33km ?
\

- Kuoministers

yes i got something similiar to that!!!

- anonymous

OMGG Thank God !!

- anonymous

I swear I thought I was never gonna understand this .

- Kuoministers

1.339618281

- Kuoministers

yea well done :)

- Kuoministers

now lets see you do number b O.O
:D

- anonymous

yess got exactly taht

- anonymous

lol oh great ;P

- Kuoministers

so have you gotton a answer for b yet?

- anonymous

1.33 km ??

- anonymous

1.325968944 ? full answer I got

- Kuoministers

1.326581208
close enough :)

- Kuoministers

\[\Huge{\color{red}{\leftarrow \boxed{\mathbb{\text{CongratS}}}}} \]

- Kuoministers

lol idk what im pointing to :P

- anonymous

omg YESS!, it took me alot of thinking even after you explained it lmaaao!

- anonymous

hahaaa ;P thaaanks girl? or guy? lol
you helped me alot

- anonymous

almost midnight here, need to sleep lol !! Wish me luck for tommoroe:)

- Kuoministers

guy :D

- Kuoministers

i just find this cat humorous

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