Question

If sin2A is equal to 0 then find the value of cos A.​

Answer 1

Answer:

Given: Sin2A = 0,

To Prove : cos A =?

Solution : Sin²A + Cos²A = 1

( 0 ) ² + Cos²A = 1

0 + Cos²A = 1

Cos²A = 1 - 0

Cos²A = 1

Cos A = 1

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