Question

If f(x)= tanx, then f(/ 4 ) is equal to (a) 1 (b)-1 (c)0 (d) not defined​

Answer 1

Answer:

Correct option is A)

Substitute x=

4

π

+t

lim

t→o

4t

1−tan(

4

π

+t)

=lim

t→0

4t

1−

1−tan t

(1+tan t)

=lim

t→0

(1−tan t)4t

−2tan t

=

2

−1

Step-by-step explanation:

Hope it helps....