Question

Sin2A=2sinA when A is=???


please explain it

Answer 1

Answer:

sin2A=2sinA

2sinA.cosA-2sinA =0

2sinA(cosA-1)=0

either 2sinA=0

sinA=0

sinA=sin0°

A= 0°

or cosA -1=0

cosA=1

cosA=cos 0°

A=0° , Answer

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