This is another problem which I am not able to complete

Prove the following identity.

sin(4x) = 8sin(x)cos^3(x)-4sin(x)cos(x)

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- July 8th 2012, 01:14 PMMathRavenProve the identity
This is another problem which I am not able to complete

Prove the following identity.

sin(4x) = 8sin(x)cos^3(x)-4sin(x)cos(x) - July 8th 2012, 01:28 PMPlatoRe: Prove the identity
- July 8th 2012, 01:38 PMMathRavenRe: Prove the identity
is that showing all the steps which you took?

- July 8th 2012, 01:42 PMskeeterRe: Prove the identity