prove that tan72=tan18+2tan54
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SINCE,
Take "tan" on both sides :-
_______________________________
Using trigonometric identity :-
________________________________
Then,
_________________"[PROVED]"
=======================================
_-_-_-_☆☆_-_-_-_
Take "tan" on both sides :-
_______________________________
Using trigonometric identity :-
________________________________
Then,
_________________"[PROVED]"
=======================================
_-_-_-_☆☆_-_-_-_
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