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anonymous
 one year ago
(cos Θ + cos Θ)^2 + (cos Θ + cos Θ)^2
answers are
sin2 Θ
4
8
cos2 Θ
anonymous
 one year ago
(cos Θ + cos Θ)^2 + (cos Θ + cos Θ)^2 answers are sin2 Θ 4 8 cos2 Θ

This Question is Closed

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1I just showed you this :\

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1Someone else isn't going to get a different answer...they will tell you your options are wrong as well, we got \[8 \cos^2(\theta)\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes but i was hoping someone cou;d help me answer it maybe theres a different way

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1\[(\cos(\theta)+\cos(\theta)^2 = (2\cos \theta)^2 = 4\cos^2(\theta)\] since both sides are same we have \[4\cos^2(\theta)+4\cos^2(\theta) = 8\cos^2(\theta)\]

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1Your options don't make sense, either you just pick one at random or email your teacher

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay i think im going to go with 8

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1Post the full question

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1Maybe you missed a detail

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1Including everything

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1Yeah ok the options are wrong, go either 8 or cos^2theta I guess :\ make sure to tell your teacher

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0do you mind helping w another

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what is the sine value of 5pi/3

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i know its equal to 300 degrees

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1\[\sin(5 \pi/3) \] ok so we have this, the reference angle here is pi/3 what's the ratio of sin(theta)?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0im sorry im really bad at math i just know tis equal to 300 degrees

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1that ring a bell?

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1\[\sin( \theta) = \frac{ opposite }{ hypotenuse } = \frac{ x }{ r }\]

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1dw:1439605676428:dw this is the pi/3 triangle, so far so good?

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1Ok since we know it's 300 degrees we know it's in the fourth quadrant of unit circle right. So\[y=\sqrt{3}\]and\[r = 2\]\[\frac{ y }{ r } = \frac{  \sqrt{3} }{ 2 }\] sorry I put x as opposite when it should be y/r and not x/r.

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1So that's our exact value
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