CDS 2009 PYQ with Answer — What is the value of 5sin 75°sin77°+ 2cosl3°cosl5°/ cos 15°sin 77° -7… | UPSC One

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CDS 2009 · Elementary Mathematics (CDS-I)Q14

Back to the full 2009 paper

2009 · Q14

What is the value of 5sin 75°sin77°+ 2cosl3°cosl5°/ cos 15°sin 77° -7 sin 81°/ cos 9° ?

Elementary MathematicsTrigonometry

A-1
B0
C1
D2

Explanation

Solved; answer C.

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