Question

prove the identity
inxtanx=(cosx)/(cot^2x)

Answer 1

sinx**

Answer 2

@satellite73

Answer 3

show me step by step please

Answer 4

\[\sin(x)\tan(x)=\sin(x)*\frac{\sin(x)}{\cos(x)}=\frac{\sin^2(x)}{\cos(x)}=\cos(x)*\frac{\sin^2(x)}{\cos^2(x)}\\=cos(x)*\frac{1}{\frac{\cos^2(x)}{\sin^2(x)}} =\frac{\cos(x)}{\cot^2(x)}\]

Answer 5

Thank you so much

Answer 6

could you help me with one more?

Answer 7

sure

Answer 8

(1+tanx)^2=sec^2x+2tanx

Answer 9

@zzr0ck3r