cos(pix)=-2sin(pix)

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Solution for cos(pix)=-2sin(pix) equation: 


Simplifying
cos(pix) = -2sin(pix)

Multiply cos * ipx
ciopsx = -2sin(pix)

Multiply ins * ipx
ciopsx = -2i2npsx

Solving
ciopsx = -2i2npsx

Solving for variable 'c'.

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

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

Simplifying
c = -2ino-1

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