-cos(x)+sin(2x)=0

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Solution for -cos(x)+sin(2x)=0 equation:


Simplifying
-1cos(x) + sin(2x) = 0

Multiply cos * x
-1cosx + sin(2x) = 0

Remove parenthesis around (2x)
-1cosx + ins * 2x = 0

Reorder the terms for easier multiplication:
-1cosx + 2ins * x = 0

Multiply ins * x
-1cosx + 2insx = 0

Solving
-1cosx + 2insx = 0

Solving for variable 'c'.

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

Add '-2insx' to each side of the equation.
-1cosx + 2insx + -2insx = 0 + -2insx

Combine like terms: 2insx + -2insx = 0
-1cosx + 0 = 0 + -2insx
-1cosx = 0 + -2insx
Remove the zero:
-1cosx = -2insx

Divide each side by '-1osx'.
c = 2ino-1

Simplifying
c = 2ino-1

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