Posted by **Taylor** on Wednesday, February 17, 2010 at 4:46pm.

How do you express sin4x as a trigonometric funcition of x using the identities? I think that you are supposed to start with the sine sum identity and then use the double angle identities for sin2A and cos2A, but after that I get stuck...

## Answer This Question

## Related Questions

- trig - A coil of wire rotating in a magnetic field induces a coltage E=20sin((...
- tRiG/ AlGeBrA - 1) Use double-angle identities to write the following expression...
- trig - 1) Use double-angle identities to write the following expression, using ...
- Trig identities:( - Sin4A - cos4A = sin2A - cos2A Can i just square root the ...
- Trigonometry - Proofs - Prove that the average of the numbers n sin (n degrees...
- math - sin2x-cotx = -cotxcos2x Using the various trigonometric identities(i.e. ...
- Trigonometry - I don't understand how I'm supposed set the problem up or what ...
- Math (trigonometry) - Trigonometry identities are so hard... I need some help ...
- Trig identity. - I need help with verifying these trig identities: 1) sin4x = ...
- trig - Solving Trig Functions: How Do You Solve For Sin 7.5 Using Half-Angle and...

More Related Questions