Question

Let f : R ⇢ R be given f(x) = tan x. Then $f^{-1}(1)$

• A. $\frac{\pi}4$
• B. $n\pi+\frac{\pi}4 : n ∈ Z$
• C. $\frac{\pi}3$
• D. $n\pi+\frac{\pi}3 : n ∈ Z$

Answer 1

Answer: (A)

$\frac{\pi}4$

Answer 2

The correct answer is Option (A) : $\frac{\pi}4$