Using the formula, 
, find the value of tan 60°, it being given that 
To find:- tan 60°
Given: tan2A =
……………………(1)
tan 30° = 1/√3
∴ Putting A = 30° in equation (1), we have the following:
tan 60° = 
∴ tan 60° = 
= 
= 
= 3/√3 = √3
∴ tan 60° = √3
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