Tuesday

July 29, 2014

July 29, 2014

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

- Trig -
**Reiny**, Wednesday, February 17, 2010 at 8:23pmsin 4x

= 2sin(2x)cos(2x)

= 2(2sinxcosx)(1 - 2sin^2 x)

= 4sinxcosx(1 - 2sin^2 x)

this is expressed in terms of trig functions of x.

**Related Questions**

trig - A coil of wire rotating in a magnetic field induces a coltage E=20sin((...

TRIG/ALGEBRA - 1) Find the exact value. Use a sum or difference identity. tan (-...

Trig - How do you express these problems as single trigonometric function values...

Trig - How do you express these problems as single trigonometric function values...

Trigonometry - Simplify the expression using trig identities: 1. (sin4x - cos4x...

Trigonometry - How do you express sin4x as a trigonometric function of x?

tRiG/ AlGeBrA - 1) Use double-angle identities to write the following expression...

trig - 1) Use double-angle identities to write the following expression, using ...

Trigonometry - Proofs - Prove that the average of the numbers n sin (n degrees...

Trigonometric - Find the exact value of cos7(pi)/12 using sum and/or difference ...