SarkariPYQ

SSC CHSL 2020 PYQ — Question 66

SSC CHSL - 14th October 2020 - Shift 1 • Quantitative Aptitude • Q66

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If cos x = 24/25, 0 ≤ x ≤ 90o, then the value of cotx + cosecx is:

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Correct answer: D

Explanation

The correct answer is option 4 i.e 7

Understanding

Tricks

Application

Given Cos x = 24/25

means Cos x = 24/25 = b/h

So

p2 = h2 - b2

⇒ p2 = 252 - 242

⇒ p2 = 625 - 576

⇒ p2 = 49

⇒ p = 7

Now

cotx + cosecx

= 24/7 + 25/7

= 49/7

= 7