(4cosx-3)(5sinx+4)=0

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Solution for (4cosx-3)(5sinx+4)=0 equation:


Simplifying
(4cosx + -3)(5sinx + 4) = 0

Reorder the terms:
(-3 + 4cosx)(5sinx + 4) = 0

Reorder the terms:
(-3 + 4cosx)(4 + 5insx) = 0

Multiply (-3 + 4cosx) * (4 + 5insx)
(-3(4 + 5insx) + 4cosx * (4 + 5insx)) = 0
((4 * -3 + 5insx * -3) + 4cosx * (4 + 5insx)) = 0
((-12 + -15insx) + 4cosx * (4 + 5insx)) = 0
(-12 + -15insx + (4 * 4cosx + 5insx * 4cosx)) = 0

Reorder the terms:
(-12 + -15insx + (20cinos2x2 + 16cosx)) = 0
(-12 + -15insx + (20cinos2x2 + 16cosx)) = 0

Reorder the terms:
(-12 + 20cinos2x2 + 16cosx + -15insx) = 0
(-12 + 20cinos2x2 + 16cosx + -15insx) = 0

Solving
-12 + 20cinos2x2 + 16cosx + -15insx = 0

Solving for variable 'c'.

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

Add '12' to each side of the equation.
-12 + 20cinos2x2 + 16cosx + 12 + -15insx = 0 + 12

Reorder the terms:
-12 + 12 + 20cinos2x2 + 16cosx + -15insx = 0 + 12

Combine like terms: -12 + 12 = 0
0 + 20cinos2x2 + 16cosx + -15insx = 0 + 12
20cinos2x2 + 16cosx + -15insx = 0 + 12

Combine like terms: 0 + 12 = 12
20cinos2x2 + 16cosx + -15insx = 12

Add '15insx' to each side of the equation.
20cinos2x2 + 16cosx + -15insx + 15insx = 12 + 15insx

Combine like terms: -15insx + 15insx = 0
20cinos2x2 + 16cosx + 0 = 12 + 15insx
20cinos2x2 + 16cosx = 12 + 15insx

Reorder the terms:
-12 + 20cinos2x2 + 16cosx + -15insx = 12 + 15insx + -12 + -15insx

Reorder the terms:
-12 + 20cinos2x2 + 16cosx + -15insx = 12 + -12 + 15insx + -15insx

Combine like terms: 12 + -12 = 0
-12 + 20cinos2x2 + 16cosx + -15insx = 0 + 15insx + -15insx
-12 + 20cinos2x2 + 16cosx + -15insx = 15insx + -15insx

Combine like terms: 15insx + -15insx = 0
-12 + 20cinos2x2 + 16cosx + -15insx = 0

The solution to this equation could not be determined.

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