What is (1-tan^2(x))/(1+tan^2(x)) ?

The solution to (1-tan^2(x))/(1+tan^2(x)) is cos(2x)

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simplify (1-tan^2(x))/(1+tan^2(x))

simplify

\frac{1 - tan ^{2} ( x )}{1 + tan ^{2} ( x )}

cos (2 x)

Solution steps

\frac{1 - tan ^{2} ( x )}{1 + tan ^{2} ( x )}

Rewrite using trig identities

= \frac{1 - tan ^{2} ( x )}{sec ^{2} ( x )}

Express with sin, cos

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

Rewrite using trig identities

= cos (2 x)

9 (x - 1) - (x - 1)^{2}

lo g_{4} (16 x^{4} y^{3})

(2 x (x^{2} + 1)^{\frac{1}{2}})^{2}

\frac{2}{3} + \frac{1}{4} + \frac{1}{18}

tan^{2} (2 x) - sec^{2} (x)

What is (1-tan^2(x))/(1+tan^2(x)) ?
The solution to (1-tan^2(x))/(1+tan^2(x)) is cos(2x)