Thursday

April 24, 2014

April 24, 2014

Posted by **Jerry** on Tuesday, November 13, 2012 at 9:46am.

sin^4theta - cos^4theta = sin^2theta-cose^2theta

- Trig Identity -
**Reiny**, Tuesday, November 13, 2012 at 10:10amLS = sin^4 Ø - cos^4 Ø

= (sin^2 Ø + cos^2 Ø)(sin^2 Ø - cos^2 Ø)

= (1)(sin^2 Ø - cos^2 Ø)

= RS

**Related Questions**

Precalculus with Trigonometry - Prove or disprove the following identity: (sin(...

Precalc - Prove or disprove the following identity. cos(-x) - sin(-x) = cos(x...

Precalculus with Trigonometry - Prove or disprove the following identity: cos (x...

Pre-Calc (Prove the identity) - Prove the identity. (show steps please!) Thank ...

Prove trig identity - Prove the following trigonometric identity: (sec^2x-1)(csc...

Trigonometry - Prove the identity sin(x+y+z)+sin(x+y-z)+sin(x-y+z)+ sin(x-y-z...

trig - Prove the identity sin(3 pi /2 + x) + sin(3pi/2 -x) = -2cosx

Advanced Functions/Trig - Prove the identity: cos^4 x + sin^4 x = 1 - (1/2)sin^2...

trig - prove as an identity 1/1+sin(x) + 1/1-sin(x)

trig - cos(sin^-1 x)=sq rt(1-x^2) prove the identity