Posted by **denise** on Sunday, July 24, 2011 at 9:01pm.

solve the equation 4cos^2x-1=0

## Answer this Question

## Related Questions

- precal - how in the world do you solve this... 4cos^2x -3 =0 add three to both ...
- pre cal 2 - solve the equation 4cos^2x-1=0
- pre calc - solve the equation 1+4sin(x)=4cos^2(x)
- trig - Write an equation for simple harmonic motion, given that the amplitude ...
- Trigonometry - Need help solving problems using the Trigonometric Identities: ...
- Precal - Solve the exponential equation algebraically 5^(-t/2) = 0.20
- Pre-Cal - Hi, can someone please solve this step-by-step for me? I really don't ...
- More trig - Use the Quadratic Formula to solve the equation in the interval [0,...
- pre-cal - What are the steps for solving this? Directions Use the quadratic ...
- precal - solve the equation on the interval [0,2pi) cos(x+pi/4)-cos(x-pi/4)=1