Question

If sin theta=2, then find the value of cos theta.​

Answer 1

Answer : √-3

Solution :

Given that : sinA = 2

As we know that : sin²A + cos²A = 1

=> (2)² + cos²A = 1

=> 4 + cos²A = 1

=> cos²A = 1-4

=> cos²A = -3

=> cosA = √-3

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