If $0<x<\frac{\pi}{2}$, then
Answer & explanation
Correct answer: option 1
It is evident from the graphs of the functions
$y=\cos x$ and $y=1-\frac{2 x}{\pi}$ that
$\cos x>1-\frac{2 x}{\pi}$
If $0<x<\frac{\pi}{2}$, then
Correct answer: option 1
It is evident from the graphs of the functions
$y=\cos x$ and $y=1-\frac{2 x}{\pi}$ that
$\cos x>1-\frac{2 x}{\pi}$