Question

Sin 2B = 2 sin B is true when B is equal to

Answer 1

sin 0° is the answer

I helped you!!

Answer 2

BY FORMULA

$\sin(2 \alpha ) = 2 \sin( \alpha ) \cos( \alpha )$

SIN2B=2(SINB)(COSB) —>(1)

IN THE QUESTION YOU GAVE THAT SIN2B=2SINB SUB IN eq.(1)

SIN2B=2SINB(COSB)

2SINB=2SINB(COSB)

COSB=1

$\cos(0\degree) = 1$

☆ B = 0°

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