‹ Back to the paper
If , then is:
If $\alpha \le 2\sin^{-1} x + \cos^{-1} x \le \beta$, then $(\alpha, \beta)$ is:
- (a)$(0, \pi)$
- (b)$(-\frac{\pi}{2}, \frac{\pi}{2})$
- (c)$(-\frac{3\pi}{2}, \frac{\pi}{2})$
- (d)None of the above.
Answer
No answer yet.
From ISC 2022 Specimen Mathematics Paper 1, question 4.