Question

X=2t/1+t^2 and y=1-t^2/1+t^2 then find x^2+y^2

Answer 1

Answer:

1

Step-by-step explanation:

let t=tan x

then 2tan x/ 1+tan^2x = sin 2x

and 1-tan^2x/ 1+ tan^2x = cos 2x

so sin^2x + cos^2x = 1