Question

Q22.
2x
1
If sin-1
1+x2
+ sin-1_27
1+y2
= 2 tan-1 a, then
a is equal to
(A)
у
1 - x
x+y
(B)
1-xy
(C) x+y
1+xy
у
(D)
1 + x​

Answer 1

Answer:

12*12+

12/12=52

I hope I help you