Answer:
C
Explanation:
Using the addition formula for tangent
tan(x + y) =
and the exact values
tan(
) =
and tan(
) = 1
tan(
) = tan(
+
)
=

=
( multiply numerator/ denominator by
)
=

rationalise denominator by multiplying numerator/denominator by (
+ 1)
=

=

=

=
+ 2 → C