2cos(2t)-1=0

Solution for 2cos(2t)-1=0 equation:

Simplifying
2cos(2t) + -1 = 0

Remove parenthesis around (2t)
2cos * 2t + -1 = 0

Reorder the terms for easier multiplication:
2 * 2cos * t + -1 = 0

Multiply 2 * 2
4cos * t + -1 = 0

Multiply cos * t
4cost + -1 = 0

Reorder the terms:
-1 + 4cost = 0

Solving
-1 + 4cost = 0

Solving for variable 'c'.

Move all terms containing c to the left, all other terms to the right.

Add '1' to each side of the equation.
-1 + 1 + 4cost = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 4cost = 0 + 1
4cost = 0 + 1

Combine like terms: 0 + 1 = 1
4cost = 1

Divide each side by '4ost'.
c = 0.25o-1s-1t-1

Simplifying
c = 0.25o-1s-1t-1