Question

Show that Cot(9)*cot(27)*cot(45)*cot(63)*cot(81)=1

Answer 1

Explanation:

Cot(9)*cot(27)*cot(45)*cot(63)*cot(81)=1

Cot(9)*cot(27)*1*tan(27)*tan(9)

1*1*1

1