2cos(x+20)+1=0

Solution for 2cos(x+20)+1=0 equation:

Simplifying
2cos(x + 20) + 1 = 0

Reorder the terms:
2cos(20 + x) + 1 = 0
(20 * 2cos + x * 2cos) + 1 = 0
(40cos + 2cosx) + 1 = 0

Reorder the terms:
1 + 40cos + 2cosx = 0

Solving
1 + 40cos + 2cosx = 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 + 40cos + -1 + 2cosx = 0 + -1

Reorder the terms:
1 + -1 + 40cos + 2cosx = 0 + -1

Combine like terms: 1 + -1 = 0
0 + 40cos + 2cosx = 0 + -1
40cos + 2cosx = 0 + -1

Combine like terms: 0 + -1 = -1
40cos + 2cosx = -1

Reorder the terms:
1 + 40cos + 2cosx = -1 + 1

Combine like terms: -1 + 1 = 0
1 + 40cos + 2cosx = 0

The solution to this equation could not be determined.