Tan^2x-secx=-1

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Solution for Tan^2x-secx=-1 equation: 


Simplifying
Tan2x + -1secx = -1

Solving
an2xT + -1cesx = -1

Solving for variable 'a'.

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

Add 'cesx' to each side of the equation.
an2xT + -1cesx + cesx = -1 + cesx

Combine like terms: -1cesx + cesx = 0
an2xT + 0 = -1 + cesx
an2xT = -1 + cesx

Divide each side by 'n2xT'.
a = -1n-2x-1T-1 + cen-2sT-1

Simplifying
a = -1n-2x-1T-1 + cen-2sT-1

Reorder the terms:
a = cen-2sT-1 + -1n-2x-1T-1

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