Question

tan a = 30 verify : tan 2A = 2 tan a /1- tan square a​

Answer 1

GIVEN THAT:-

A = 30°

NOW,

tan(2*30°) = tan60°

= tan60° = √3

2tanA/(1 - tan²A)

= 2tan30°/(1 - tan²30°)

= (2*1/√3) / (1 - 1/3)

= 2/√3/ ( 3 - 1)/3

= 2/√3/2/3

= 2/√3 * 3/2

= √3

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