Question

If cos 9 alfa = sin alfa ,then the value of alfa is

Answer 1

Step-by-step explanation:

9α=90∘−α, since we have 9α<90∘. We need to find tan5α. We know that tan45∘=1. ∴ The answer is option C.

Answer 2

9α=90∘−α, since we have 9α<90∘. We need to find tan5α. We know that tan45∘=1.

$\large\bold\red{so, your \: answer \: was \: 01}$

$\large\bold\red{Answered By Ayush8378 }$