SSC CHSL 2020 PYQ — Question 69

SSC CHSL - 13th October 2020 - Shift 2 • Quantitative Aptitude • Q69

If SecA = √(11)/3, then the value of Cosec2A+Tan2A/Sin2A+Cot2A is:

Show answer & explanation

Correct answer: B

Explanation

The correct answer is option 2 i.e 11/9

Understanding Application
We will use trigonometric identities to simplify the given equations.

Cosec2A+Tan2A/Sin2A+Cot2A

⇒ (1 / Sin2A + Sin2A + Cos2A) / (Sin2A + Cos2A / Sin2A)

⇒ (Cos2A + Sin4A  / (SinACosA)2 / (Cos2A + Sin4A / Sin2A)

⇒ 1 / Sin2A = Cosec2A

⇒ Cosec2A = 11 / 9