Question

Q18 If xy <1, then tan-x+tan' y=
x+y
A
Tan-1
1-xy
x-y
B
Tan
1+xy
C С
Tan
1- xy
D
Tan
x+y
1-x+y​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

pic of question plzz

difficult to understand