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SSC CGL 2018 PYQ — Question 49

SSC CGL Tier II Quant - 19/02/2018 • Quantitative Aptitude • Q49

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What is the value of [2 sin (45° + θ) sin (45° – θ)]/cos 2θ?

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Correct answer: D

Explanation

The correct answer is option 4 i.e. 1

[2 sin (45° + θ) sin (45° – θ)]/cos 2θ = -(cos 90o - cos 2θ)/cos 2θ

= (0 + cos 2θ)/cos 2θ = 1