Question

evaluate tan41 tan36 tan49 tan54

Answer 1

answer is helpful to u

Answer 2

We know that tan (90-theta) = cot(theta)

and (tan theta) (cot theta) =1

Here, tan 41 = tan(90-49) =cot 49

tan 36 = tan (90-54) =cot 54

Hence, tan41 tan36 tan49 tan 54

= cot 49 cot 54 tan 49 tan 54

= 1 (by using the above results)