cos(3y+2y)=cos(3y-2y)

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Solution for cos(3y+2y)=cos(3y-2y) equation:


Simplifying
cos(3y + 2y) = cos(3y + -2y)

Combine like terms: 3y + 2y = 5y
cos(5y) = cos(3y + -2y)

Remove parenthesis around (5y)
cos * 5y = cos(3y + -2y)

Reorder the terms for easier multiplication:
5cos * y = cos(3y + -2y)

Multiply cos * y
5cosy = cos(3y + -2y)

Combine like terms: 3y + -2y = 1y
5cosy = cos(1y)

Remove parenthesis around (1y)
5cosy = cos * 1y

Reorder the terms for easier multiplication:
5cosy = 1cos * y

Multiply cos * y
5cosy = 1cosy

Solving
5cosy = 1cosy

Solving for variable 'c'.

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

Add '-1cosy' to each side of the equation.
5cosy + -1cosy = 1cosy + -1cosy

Combine like terms: 5cosy + -1cosy = 4cosy
4cosy = 1cosy + -1cosy

Combine like terms: 1cosy + -1cosy = 0
4cosy = 0

Divide each side by '4'.
cosy = 0

Simplifying
cosy = 0

The solution to this equation could not be determined.

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