prove that :tan (pi/4+A) - tan (pi/4-A) =2tan2A answer fast.. Share with your friends Share 4 Manbar Singh answered this LHS = tanπ4+A - tanπ4-A=tanπ/4 + tan A1 - tanπ/4 . tan A - tanπ/4 - tan A1 + tanπ/4 . tan A=1 + tan A1 - tan A - 1 - tan A1+ tan A=1+tan A2 - 1-tan A21+tan A1 - tan A=1+tan2A + 2 tan A - 1 - tan2A + 2 tan A1 - tan2A=4 tan A1 - tan2A=2 × 2 tan A1 - tan2A=2 tan 2A=RHS 4 View Full Answer Adarsh Singh answered this If its helpful plz tap the helpful button 14
