Question

Prove the identity?

Answer 1

Using the Trig Identities

Answer 2

How would I start/do this problem

Answer 3

R u sure that it is csc theta. I thnk t shud b csc alpha.

Answer 4

whenever I do trig identities I get all trig functions in terms of sin and cosine

Answer 5

So: \[\csc2\alpha = (\sec\alpha \csc\alpha) / (2)\]

Answer 6

@dpalnc thats what I do typically

Answer 7

Do u knw vat is sin 2 alpha?

Answer 8

\[\csc2a=\frac{1}{\sin2a}=\frac{1}{2(\sin~a)(\cos~a)}=\frac{1}{2}\sec(a)\csc(a)\]

Answer 9

Yes, sin2\alpha is

Answer 10

sin2a=2(sina)(cosa)