Question

if tan 50 tan 40=1 then theta​

Answer 1

we convert tan into cot .then tan *cot= 1

Answer 2

Tan 50 Tan 40 =1
Tan(90-40). Tan 40 = tan theta
Cot 40 . Tan 40 = tan theta
1= tan theta
Tan 45 = tan theta
45 = theta
Theta = 45
Therefore theta is equal to 45 degrees