Question

Can someone help with this:

Answer 1

wut do u need help on? post a pic or paste the question and maybe I can help :)

Answer 2

It's a trig question:
sin(4 * theta) = cos(2 * theta)

Answer 3

ughhhh haven't learned that yet pal.. im sorry.. :(

Answer 4

That's alright, thanks for trying!

Answer 5

aww ok sorry again :)

Answer 6

ima add u in case u need anything else

Answer 7

there added u

Answer 8

sin(4θ) = cos(2θ)
2sin(2θ)cos(2θ) = cos(2θ)
2sin(2θ)cos(2θ) - cos(2θ) = 0
factor out!
cos(2θ) (2sin(2θ ) - 1) = 0
for the zeroes take each factor then setting be equal zero
cos(2θ) = 0 or 2sin(2θ) - 1 = 0

solve for θ ...

Answer 9

Thanks guys, really helped!

Answer 10

you're welcome