See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

N M Q R y O P x Consider a unit circle having centre at origin. sin tan sec 1 cos cot cos 1 ON PM PQ OQ OP OM PN PR OR ec MN                     f PM PN PQ PR OQ OR PM PN QR OQ OR PM PN QR OM MQ ON NR QR MQ NR MN                         (Since, NR MN MQ QR    )  1 f   