Question

evaluate limit (lim x-> pi/2) pi-x/cos x

Answer 1

just replace \(x=\pi/2\)

Answer 2

got it?

Answer 3

\[ \large \lim_{x\to\color{red}{\pi/2}}\frac{\pi-x}{\cos x}=
\frac{\pi-\color{red}{\pi/2}}{\cos\color{red}{\pi/2}}= \]

Answer 4

am quite sure he means pi/2 -x in the numerator..please confirm..