CUET Preparation Today
If $f(x) = |\cos x|$, then $f\left(\frac{3\pi}{4}\right)$ is: |
$1$ $-1$ $\frac{-1}{\sqrt{2}}$ $\frac{1}{\sqrt{2}}$ |
$\frac{1}{\sqrt{2}}$ |
The correct answer is Option (4) → $\frac{1}{\sqrt{2}}$ ## $f(x) = |\cos x|$ $f\left(\frac{3\pi}{4}\right) = \left|\cos \frac{3\pi}{4}\right| = \left|-\frac{1}{\sqrt{2}}\right| = \frac{1}{\sqrt{2}}$ |
