Question

1 + cot²A = 4, then sinA =
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Answer 1

Answer:

1 / 2

Step-by-step explanation:

Since, 1 + cot^2 A = cosec^2 A

cosec^2 A = 4

1 / sin^2 A = 4

sin^2 A = 1/4

sin A = √ 1/4

sin A = 1/2

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Answer 2

1 + cot²A = 4

means ,cosec²A =4

             cosecA= 2

so, sinA =1/2

formulas , 1 + cot²A =cosec²A and cosecA = 1/ SinA