9sin(2x)-cos(x)=0

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Solution for 9sin(2x)-cos(x)=0 equation:


Simplifying
9sin(2x) + -1cos(x) = 0

Remove parenthesis around (2x)
9ins * 2x + -1cos(x) = 0

Reorder the terms for easier multiplication:
9 * 2ins * x + -1cos(x) = 0

Multiply 9 * 2
18ins * x + -1cos(x) = 0

Multiply ins * x
18insx + -1cos(x) = 0

Multiply cos * x
18insx + -1cosx = 0

Reorder the terms:
-1cosx + 18insx = 0

Solving
-1cosx + 18insx = 0

Solving for variable 'c'.

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

Add '-18insx' to each side of the equation.
-1cosx + 18insx + -18insx = 0 + -18insx

Combine like terms: 18insx + -18insx = 0
-1cosx + 0 = 0 + -18insx
-1cosx = 0 + -18insx
Remove the zero:
-1cosx = -18insx

Divide each side by '-1osx'.
c = 18ino-1

Simplifying
c = 18ino-1

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