Math, asked by vidya12394, 9 months ago

sin^9 + cos^9 simply it​

Answers

Answered by Anonymous
3

LHS = (Cos9° + Sin9°) / (Cos9° - Sin9°)  

Divide by Nr and Dr  by  Cos9° ...

LHS = (1 + Tan9°) / (1 - Tan9°)

       = (Tan 45° + Tan 9°) / (1 - Tan 45° * Tan 9°)  

       = Tan (45°+9°)  

       = Tan 54°

       = Cot 36°.

Hope it helps

And thanks for asking doubt

Similar questions