CBSE Class 11 Maths Relations and Functions Quiz 3

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1. The value of cos 5π is

A 0 B 0 C -1 D None of these

2. In a triangle ABC, cosec A (sin B cos C + cos B sin C) equals

A none of these B c/a C 1 D a/c

3. The value of (sin 7x + sin 5x) /(cos 7x + cos 5x) + (sin 9x + sin 3x) / (cos 9x + cos 3x) is

A tan 6x B 2 tan 6x C 3 tan 6x D 4 tan 6x

Practice more on Relations and Functions

Quiz 1 Quiz 2 Quiz 3