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\[\sin (\theta + \alpha) = \sin \theta \cos \alpha + \sin \alpha \cos \theta\]

|dw:1436542535457:dw|
also note: \[\pi/6 = 180/6 = 30\]

@butterflydreamer I am working it out but I don't think its right tho

you have the right idea :) BUT note that
\[\sin \theta = \frac{ 3 }{ 5 } \]

hang on give me a minute :)

@butterflydreamer I thought I had finally got it :D but then I still got the wrong answer -___-

Does it have to do with it being in Quad 2?

did you change sin theta = 1/2 to sin theta = 3/5 ?

yeah I did that :/

oh ALSO! we have to work out what cos theta equals to

so we did change it after

do you have any idea about correct answer?

The answer i got is .0866025

you can find the value of cos theta by formula
\[\cos ^{2}=1- \sin ^{2}\theta\]

and then simply put all the value in the equation

@butterflydreamer theres a way to check it if its right so we'll see :D

It didnt upload for some reasn lol

waiiit give me a min xD

-4/5 not - 3/5

i know xD my bad
http://prntscr.com/7r45nc

do you understand what i did? @shortyyshayy ^_^

@butterflydreamer yeah trying it out right now to see if its right so fingers crossed

okey dokeyy *crosses fingers*

-.-... sigh.
What is the answer "meant" to be then?

.901 when you plug it back it in the original equation of sin theta + pi over 6

when you plug 3/5 in for theta I mean

hmm.. i don't think you can do that because:
|dw:1436544628958:dw|

Wait whats the correct answer then? MY heads going to explode XD

So checking the work like sin (3/5 + pi/6) is wrong?

can you upload your work again please lol? just so I can use it as a reference lol?

sureee,

http://prntscr.com/7r4e4w

i know right xD I know that's the answer.. but idk why i can't check it -.-...

What was the drawing you were showing me above with the inverse?

anyways, i'm heading off to bed now (it's 2:27am here) . I HOPE that my working out was correct

lmaoo no way? Ohmygod thanks so much for helping me out!! haha night!!