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In triangle ABC, right angled at C, then the value of cosec (A + B) is __________

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in Mathematics - Class 10 by (506k points)
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

1 Answer

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Best 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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