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SSC CHSL 2021 PYQ — Question 61

SSC CHSL - 6 Aug 2021 - Shift 3 • Quantitative Aptitude • Q61

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What is the value of cos220o+cos270osin290o−tan245o?\frac{cos^220^o+cos^270^o}{sin^290^o}-tan^245^o?

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Correct answer: C

Explanation

The correct answer is option 3 i.e. 0

Explanation:

According to the given question,

cos220o+cos270osin290o−tan245o\frac{cos^220^o+cos^270^o}{sin^290^o}-tan^245^o

⇒ sin270o+cos270osin290o−tan245o\frac{sin^270^o+cos^270^o}{sin^290^o}-tan^245^o

⇒ 1sin290o−tan245o\frac{1}{sin^290^o}-tan^245^o

⇒ 1−tan245o1 - tan^245^o

⇒ 1 - 1 = 0

HEnce the required answer is 0.