Question

sin2A=2sinA find the value of A

Answer 1

howdy!!

your answer is ----

Given, sin 2A = 2*sin A

=> 2*sin A*cos A = 2*sin A

=> cos A = 1

=> cos A = cos 0°

=> A = 0°

So, sin 2A = 2sin A is true when A = 0°

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hope it help you

Answer 2

Good evening friend


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Given that

=> sin 2A = 2 sin A

Find, A = ?

We know that,

=> sin 2A = 2 sinA cosA

So,

=>sin2A = 2sinA

=> 2sin A cosA = 2 sinA

=> CosA = 1

=> cosA = cos 0°

=> A = 0°

So the value of A = 0°

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I hope it will help you a lot

Thanks