If tan (5α - 35°) = cot (35° - 2α) then the value of sin 2α .
Answer & explanation
Correct answer: option 2
[Concept: tan A = cot B, when A + B = 90°]
Therefore,
(5a - 35° + 35° - 2α) = 90°
3α = 90°
α = 30°
Put this value in find →
⇒ sin 2α
⇒ sin60°
= \(\frac{\sqrt {3}}{2}\)