1.

In triangle ABC, right angled at C, then the value of cosec (A + B) is __________(a) 2(b) 0(c) 1(d) ∞This question was addressed to me in quiz.This intriguing question comes from Trigonometric Ratios topic in chapter Trigonometry of Mathematics – Class 10

Answer»

The correct answer is (c) 1

The best explanation: Since the triangle is right angles at C,

The SUM of the remaining TWO angles will be 90

∴ cosec(A + B) = Cosec 90° = 1



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