SSC CGL 2020 PYQ — Question 51

SSC CGL - 9th March 2020 Shift 2 • Quantitative Aptitude • Q51

If 5 Cotθ = 3, find the value of (6 Sinθ - 3 Cosθ)/(7 Sinθ + 3 Cosθ).

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Correct answer: C

Explanation

The correct answer is option 3 i.e 21/44

⇒ 5Cotθ = 3

⇒ Cotθ = 3 / 5 = Base / Perpendicular

Hypotenuse = √(32 + 52)

Hypotenuse = √34

⇒ (6Sinθ - 3Cosθ) / (7Sinθ + 3Cosθ)

⇒ (6 × (5 / √34) - 3 × (3 / √34)) / (7 × (5 / √34) + 3 × (3 / √34))

⇒ (30 - 9) / (35 + 9)

⇒ 21 / 44