Sunday

April 20, 2014

April 20, 2014

Posted by **Katie** on Saturday, April 7, 2012 at 7:19pm.

4cos^2x+4cosx-1=0

- TRIG -
**bobpursley**, Saturday, April 7, 2012 at 7:41pmwhat is (2cosx+1-sqrt2)(2cos+1+sqrt2)

**Related Questions**

Trig - Factor 4cos^2x+4cosx-1=0

More trig - Use the Quadratic Formula to solve the equation in the interval [0,...

trig - Factor each expression: cos^2x- 2cosx+1 4cos^2x-1

math - find all solutions of the equation 4cos^2x-4cosx+1=0

pre-cal - What are the steps for solving this? Directions Use the quadratic ...

Math - Trig - Double Angles - Prove: cos4x = 8cos^4x - 8cos^2x + 1 My Attempt: ...

Per-calc Helppppp - keep in mind answers should be pi radians or if necessary 3 ...

trig - find the primary solutions. 4cos^2x-3=0 and tanx-tan^2x=0.

trig help again i cant get any of these - sin^4cos^2x=(1/16)(1-cos 2x)(1-cos4x) ...

trig - 5sin(2x)+4cos(x)=0