Question

Solve this
∫▒〖cos^2⁡x dx〗 = tanx + c

Answer 1

\[\textbf{HINT}\]Use \(\cos^2 (x) = \dfrac{\cos(2x)+1}{2}.\)

Answer 2

sorry i've wrote wrong exercise
it's \[\int\limits_{?}^{?}1/\cos^2x dx = tanx + c \]