IF 1 + sin²a = 3 Sin A cos a , then value of cot a is
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Correct answer is: (c)1, 2
1+ sin2α = 3
sinα cos α sin2α + cos2α + sin2α = 3 sinα cos α 2 sin2α - 3sinα cos α + cos2α = 0 (2sinα -cos α)( sinα- cosα) =0 ∴ ∴ cotα = 2 or cotα = 1
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Answer:
1 and 2
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