Question

if sinA =1/2 verify that 2 sinA cosA= 2tanA /1+tanA× tanA​

Answer 1

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sinA=1/2

A=30°

LHS

2sinAcosA

=2sin30cos30

=2(1/2)(√3/2)

=√3/2

RHS

2tanA/1+tan²A

=2tan30/1+tan²30

=(2/√3)/1+(1/3)

=6/4√3

=3/2√3

=√3/2

☣LHS=RHS