anonymous
  • anonymous
if sin theta=3/5 and theta is in quad 2 the exact form of sin (theta+ pi/6) is ..... I had already asked this question but still don't understand it
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
butterflydreamer
  • butterflydreamer
\[\sin (\theta + \alpha) = \sin \theta \cos \alpha + \sin \alpha \cos \theta\]
butterflydreamer
  • butterflydreamer
therefore: \[\sin (\theta + \frac{ \pi }{ 6}) = \sin \theta \cos \frac{ \pi }{ 6 } + \sin \frac{ \pi }{ 6 } \cos \theta\]
butterflydreamer
  • butterflydreamer
and then you want to use your exact value table to help you out here since they want the final answer in exact form (this means including radicals) :)

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

butterflydreamer
  • butterflydreamer
|dw:1436542535457:dw| also note: \[\pi/6 = 180/6 = 30\]
anonymous
  • anonymous
@butterflydreamer I am working it out but I don't think its right tho
butterflydreamer
  • butterflydreamer
you have the right idea :) BUT note that \[\sin \theta = \frac{ 3 }{ 5 } \]
butterflydreamer
  • butterflydreamer
hang on give me a minute :)
anonymous
  • anonymous
@butterflydreamer I thought I had finally got it :D but then I still got the wrong answer -___-
anonymous
  • anonymous
Does it have to do with it being in Quad 2?
butterflydreamer
  • butterflydreamer
did you change sin theta = 1/2 to sin theta = 3/5 ?
anonymous
  • anonymous
yeah I did that :/
butterflydreamer
  • butterflydreamer
oh ALSO! we have to work out what cos theta equals to
anonymous
  • anonymous
anonymous
  • anonymous
so we did change it after
butterflydreamer
  • butterflydreamer
hmm what is the final answer? i want to check that i have it right before showing you the way i did it :)
anonymous
  • anonymous
do you have any idea about correct answer?
anonymous
  • anonymous
The answer i got is .0866025
anonymous
  • anonymous
you can find the value of cos theta by formula \[\cos ^{2}=1- \sin ^{2}\theta\]
anonymous
  • anonymous
and then simply put all the value in the equation
butterflydreamer
  • butterflydreamer
alright, well i've written up my working out. Not 100% sure this is correct but i'll upload it in a bit :)
anonymous
  • anonymous
@butterflydreamer theres a way to check it if its right so we'll see :D
anonymous
  • anonymous
It didnt upload for some reasn lol
butterflydreamer
  • butterflydreamer
waiiit give me a min xD
xapproachesinfinity
  • xapproachesinfinity
-4/5 not - 3/5
butterflydreamer
  • butterflydreamer
i know xD my bad http://prntscr.com/7r45nc
xapproachesinfinity
  • xapproachesinfinity
:)
butterflydreamer
  • butterflydreamer
do you understand what i did? @shortyyshayy ^_^
anonymous
  • anonymous
@butterflydreamer yeah trying it out right now to see if its right so fingers crossed
butterflydreamer
  • butterflydreamer
okey dokeyy *crosses fingers*
anonymous
  • anonymous
I had the same problem yesterday with this and people tried to help me but no luck and I checked it and still not the correct answer ohmygod Im so annoyed now with this problem lol
butterflydreamer
  • butterflydreamer
-.-... sigh. What is the answer "meant" to be then?
anonymous
  • anonymous
.901 when you plug it back it in the original equation of sin theta + pi over 6
anonymous
  • anonymous
when you plug 3/5 in for theta I mean
butterflydreamer
  • butterflydreamer
hmm.. i don't think you can do that because: |dw:1436544628958:dw|
butterflydreamer
  • butterflydreamer
so it is the correct answer :) but you would plug in \[\theta = \sin^{-1} (3/5) \] into the equation :)
anonymous
  • anonymous
Wait whats the correct answer then? MY heads going to explode XD
anonymous
  • anonymous
So checking the work like sin (3/5 + pi/6) is wrong?
butterflydreamer
  • butterflydreamer
xD wait... i'm getting confused now LOLLL. well it when i do that, i get a different answer? T_T... I'm pretty sure working out is correct \[\sin( \theta + \frac{ \pi }{ 6 }) = \frac{ 3 \sqrt 3 - 4 }{ 10 }\]
anonymous
  • anonymous
can you upload your work again please lol? just so I can use it as a reference lol?
butterflydreamer
  • butterflydreamer
sureee,
anonymous
  • anonymous
Our professor showed us how to check our answer but your method and my method either of them don't work out XD
butterflydreamer
  • butterflydreamer
http://prntscr.com/7r4e4w
butterflydreamer
  • butterflydreamer
i know right xD I know that's the answer.. but idk why i can't check it -.-...
anonymous
  • anonymous
So are you sure it's correct then cuz I might just put your answer lol? Cuz maybe its the way were both checking it?
butterflydreamer
  • butterflydreamer
i think it's correct. I looked at the previous time you uploaded the question, and it's the same answer so xD that's a sign LOL
anonymous
  • anonymous
What was the drawing you were showing me above with the inverse?
butterflydreamer
  • butterflydreamer
it was me thinking i was onto something (only to fall short) xD don't worry about it because it doesn't work anyway -.-
butterflydreamer
  • butterflydreamer
anyways, i'm heading off to bed now (it's 2:27am here) . I HOPE that my working out was correct
anonymous
  • anonymous
lmaoo no way? Ohmygod thanks so much for helping me out!! haha night!!

Looking for something else?

Not the answer you are looking for? Search for more explanations.