Question

Evaluate $\int \frac{se{c}^{2}x}{cose{c}^{2}x}dx$

Answer 1

$I=\int \frac{se{c}^{2}x}{cose{c}^{2}x}dx$

$I=\int \frac{si{n}^{2}x}{co{s}^{2}x}dx$

$I=\int ta{n}^{2}xdx$

$I=\int (se{c}^{2}x-1)dx$

$I=\tan x-x+C$