(2sinx-1)(2cosx+4)=0

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Solution for (2sinx-1)(2cosx+4)=0 equation:


Simplifying
(2sinx + -1)(2cosx + 4) = 0

Reorder the terms:
(-1 + 2insx)(2cosx + 4) = 0

Reorder the terms:
(-1 + 2insx)(4 + 2cosx) = 0

Multiply (-1 + 2insx) * (4 + 2cosx)
(-1(4 + 2cosx) + 2insx * (4 + 2cosx)) = 0
((4 * -1 + 2cosx * -1) + 2insx * (4 + 2cosx)) = 0
((-4 + -2cosx) + 2insx * (4 + 2cosx)) = 0
(-4 + -2cosx + (4 * 2insx + 2cosx * 2insx)) = 0

Reorder the terms:
(-4 + -2cosx + (4cinos2x2 + 8insx)) = 0
(-4 + -2cosx + (4cinos2x2 + 8insx)) = 0

Reorder the terms:
(-4 + 4cinos2x2 + -2cosx + 8insx) = 0
(-4 + 4cinos2x2 + -2cosx + 8insx) = 0

Solving
-4 + 4cinos2x2 + -2cosx + 8insx = 0

Solving for variable 'c'.

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

Add '4' to each side of the equation.
-4 + 4cinos2x2 + -2cosx + 4 + 8insx = 0 + 4

Reorder the terms:
-4 + 4 + 4cinos2x2 + -2cosx + 8insx = 0 + 4

Combine like terms: -4 + 4 = 0
0 + 4cinos2x2 + -2cosx + 8insx = 0 + 4
4cinos2x2 + -2cosx + 8insx = 0 + 4

Combine like terms: 0 + 4 = 4
4cinos2x2 + -2cosx + 8insx = 4

Add '-8insx' to each side of the equation.
4cinos2x2 + -2cosx + 8insx + -8insx = 4 + -8insx

Combine like terms: 8insx + -8insx = 0
4cinos2x2 + -2cosx + 0 = 4 + -8insx
4cinos2x2 + -2cosx = 4 + -8insx

Reorder the terms:
-4 + 4cinos2x2 + -2cosx + 8insx = 4 + -8insx + -4 + 8insx

Reorder the terms:
-4 + 4cinos2x2 + -2cosx + 8insx = 4 + -4 + -8insx + 8insx

Combine like terms: 4 + -4 = 0
-4 + 4cinos2x2 + -2cosx + 8insx = 0 + -8insx + 8insx
-4 + 4cinos2x2 + -2cosx + 8insx = -8insx + 8insx

Combine like terms: -8insx + 8insx = 0
-4 + 4cinos2x2 + -2cosx + 8insx = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-2 + 2cinos2x2 + -1cosx + 4insx) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-2 + 2cinos2x2 + -1cosx + 4insx)' equal to zero and attempt to solve: Simplifying -2 + 2cinos2x2 + -1cosx + 4insx = 0 Solving -2 + 2cinos2x2 + -1cosx + 4insx = 0 Move all terms containing c to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2cinos2x2 + -1cosx + 2 + 4insx = 0 + 2 Reorder the terms: -2 + 2 + 2cinos2x2 + -1cosx + 4insx = 0 + 2 Combine like terms: -2 + 2 = 0 0 + 2cinos2x2 + -1cosx + 4insx = 0 + 2 2cinos2x2 + -1cosx + 4insx = 0 + 2 Combine like terms: 0 + 2 = 2 2cinos2x2 + -1cosx + 4insx = 2 Add '-4insx' to each side of the equation. 2cinos2x2 + -1cosx + 4insx + -4insx = 2 + -4insx Combine like terms: 4insx + -4insx = 0 2cinos2x2 + -1cosx + 0 = 2 + -4insx 2cinos2x2 + -1cosx = 2 + -4insx The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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