Question

If f(x, y) = tan ¹), then f (3.3) is equal to

Answer 1

Step-by-step explanation:

Correct option is C)

Given that ,f(x)=tan

−1

x ….(1)

Put x=y in equation (1) we get

f(y)=tan

−1

y ….(2)

Add equation (1) and (2)

f(x)+f(y)=tan

−1

x+tan

−1

y

Using inverse trigonometry properties, we get

tan

−1

x+tan

−1

y =tan

−1

(

1−xy

x+y

)

This is the answer