if sinA =1/3 then find value of 2cot^2A+2 is
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answer is 8.
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sinA = 1/3
cosA = √(1 - sin^2A)
= √(1 - 1/9)
= √(8/9)
= (2√2)/3
2cot^2A+2 = 2(cosA/sinA)^2+2
= 2{(2√2)/3 ÷ 1/3)^2+2
=2(2√2)^2+2
=16+2
=18
Hope it helps you!
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