Question

If sintetha = (x^2+y^2)/(x^2-y^2),then
1)x not equal to y
2) xnot equal to y and x,ybelongs to R
3 x=0,ynot equal to 0 or xnot equal to 0 and y=0
{by the way correct option is 3rd)

Answer 1

Answer:

Explanation:

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