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

Prove or disprove the following identity

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

## Answer this Question

## Related Questions

- math - how do you get sin(4theta)/1+cos(4theta) to equal tan(2theta)
- Further mathemactics - Demostrate the validity of tan^2theta-sin^2theta=sin^...
- Math - sin theta = 8/17 and theta is in the second quadrant. Find sin(2theta),...
- Prove or Disprove - Cos(X+y)cos(x-y)= cos^2theta - sin^2theta I foiled the left ...
- math - There are no typos and no work b/c I don't know how to do them. Thanks. 1...
- Math - 1)Find cos theta if sin theta=3/5 and 90 degrees<theta<180 degrees...
- Precalc+trig - Solve tan(40/90) for the double angle cos(2theta). I know I use ...
- trig - find the single term of cos^2 4theta - sin^2 4theta
- Math - There are no typos and no work b/c I don't know how to do them. Thanks. 1...
- Math - sin theta = 8/17 and theta is in the second quadrant. Find sin(2theta),...