SSC CHSL 2023 PYQ — Question 63

SSC CHSL 2023 - 03 Aug 2023 - Shift 1 • Quantitative Aptitude • Q63

If sin α + cos α = 23\frac {2}{\sqrt3}, then what is (tan α + cot α) equal to?

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Correct answer: C

Explanation

The correct answer is option 3 i.e 6.    

Given that

If sin α + cos α = 23\frac {2}{\sqrt3},

Square both sides

⇒ sin2 α + cos2 α + 2 sin α cos α = 43\frac {4}{3} 

⇒ 1 + 2 sin α cos α = 43\frac {4}{3} 

⇒ 2 sin α cos α = (4/3) - 1 = 1/3

⇒ sin α cos α = 1/6

Hence, the value of tan α + cot α

⇒  sin α/cos α + cos α/sin α

⇒ (sin2 α + cos2 α)/sin α cos α

⇒ 1/(1/6)

⇒  6