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Simple common trig function proof. Compound and multiple angles. , class 11th, 11th maths, trigonometric functions.
Proving tan(a+b) = ( tana + tanb ) / 1 tanatanb cot(a+b) cotacotb 1) (cota cotb for more videos please v. Https//bitly/2pbki5y for more cool math videos vis. Proving tan(a+b)tan(ab)= (square oftanasquare of tanb )/(1square tanasquare ) for more videos please visit.
Compound and multiple angles. More proofs and formulas, visit. Video created by tiago hands.