What is the general solution for cos^2(x)=cos^2(x)-sin^2(x) ?

The general solution for cos^2(x)=cos^2(x)-sin^2(x) is x=2pin,x=pi+2pin

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cos^2(x)=cos^2(x)-sin^2(x)

cos^{2} (x) = cos^{2} (x) - sin^{2} (x)

x = 2 πn, x = π + 2 πn

Solution steps

cos^{2} (x) = cos^{2} (x) - sin^{2} (x)

Subtract

cos^{2} (x) - sin^{2} (x)

from both sides

sin^{2} (x) = 0

Apply rule

x^{n} = 0 \Rightarrow x = 0

sin (x) = 0

General solutions for

sin (x) = 0

x = 0 + 2 πn, x = π + 2 πn

Solve

x = 0 + 2 πn : x = 2 πn

x = 2 πn, x = π + 2 πn

arctan (x) = \frac{2.73}{7.5}

y, sin (x) + cos (y) = ln (x)

- 8 csc^{2} (x) - 4 cot (x) = - 12

2 cos (2 x) + 43 sin (x) = 5

sin (2 x) + 2 cos^{2} (x) = 0

What is the general solution for cos^2(x)=cos^2(x)-sin^2(x) ?
The general solution for cos^2(x)=cos^2(x)-sin^2(x) is x=2pin,x=pi+2pin