prove that 2tanA/1 - tan 2A =tan2A if angle A=30 degree
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Step-by-step explanation:
2tanA/1 - tan^2A = 2 tan30/(1+tan30). (1-tan30)
=2/√3 / [(1)^2-(1/√3)^2]
=2/√3 / (1-1/3)
=2/√3 × 3/2
=√3
tan2A= tan 2(30)
=tan60 =√3
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