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Show that tan 2 x=(2 tan x)/(1-tan ^(2)...

Show that
`tan 2 x=(2 tan x)/(1-tan ^(2) x)`

Text Solution

Verified by Experts

We know that .tan (x+y)=(tan x+tan y)/(1-tan x tan y).
Replacing .y. by .x., we get .tan 2 x=(2 tan x)/(1-tan ^(2) x).
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