1.

Evaluate sec 65° + cosec 75°.(a) Cosec 25° + Sec 15°(b) Cosec 25° – Sec 15°(c) Cosec 15° + Sec 25°(d) Cosec 15° – Sec 25°I got this question by my college professor while I was bunking the class.The origin of the question is Trigonometric Ratios of Complementary Angles in portion Trigonometry of Mathematics – Class 10

Answer»

The correct CHOICE is (C) Cosec 15° + Sec 25°

Best EXPLANATION: Sec 65° + Cosec 75° = Sec (90° – 25°) + Cosec (90° – 15°)

= Cosec 25° + sec 15°



Discussion

No Comment Found

Related InterviewSolutions