Question

sin(2x)/cos(x)-cos^2(x)=sin^2(x)
Thank you in advance

Answer 1

Have you tried anything ?

Answer 2

Hello, Emily! Welcome to OpenStudy!!

Why not break this problem down into smaller parts to make it more comprehensible? Look at the first term:\[\sin(2x)/\cos(x)=\frac{ \sin 2x }{ \cos x }\] Please look at your table of trig identities (find one on the Internet if need be), and rewrite sin 2x in a format that includes both sin x and cos x.

Answer 3

Finally I have:
2sin=1; p/6+2pn
But I am not sure

Answer 4

It'd likely be very helpful for both of us if you were to show all of your work.
There is an identity for sin 2x; have you looked for it yet, Emily? If not, please do that. You could look up "double angle formula" or just "trig identities." Have you a textbook? If not, have you an online reference? If not, are you willing to try an Internet search?

Answer 5

sinx=1/2