If sin α + cos α = , 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 = ,
Square both sides
⇒ sin2 α + cos2 α + 2 sin α cos α =
⇒ 1 + 2 sin α cos α =
⇒ 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