SSC CGL 2019 PYQ — Question 3

SSC CGL Tier II Quant - 11/09/2019 • Quantitative Aptitude • Q3

If sinθ = √3 cosθ , 0° < θ < 90°, then the value of 2sin²θ + sec²θ + sinθsecθ + cosecθ is?

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Correct answer: A

Explanation

The correct answer is option 1 i.e. (33 + 10√3)/6

sinθ = √3cosθ 

⇒ sinθ/cosθ = √3

⇒ tanθ = √3

⇒ θ = 60°

Now, substitute the value of θ = 60° in the given equation:

⇒ 2 × sin²60° + sec² 60°+ sin60°× sec60° + cosec60°

⇒ 2 × (3/4) + 4 + (√3/2) × 2 + (2/√3)

⇒ (33 + 10√3)/6