Question

If <A=30,verify that sin2A=(2 tanA)÷(1+tan^2A)​

Answer 1

Step-by-step explanation:

TAKE

L.H.S

=2 tanA/1+tan^2A

=2sinA/cosA×cos^2A/1-sin2A/cos2A×cos^2A

=2sinA.cosA/sin^2A+COS^2A

= 2sinA/1

= 2sinA

RHS