If xcos(z) +ysin(z) =2a, xcos(k) + ysin(k) =2a and 2sin(z/2).sin(k/2) =1 then

(a) cos(z) + cos(k) = 2ax/x² + y²

(b) cos(z). cos(k) = (2a²- y²)/(x²+ y²⁾

© y² =4a(z-x)

(d) cos(z) +cos(k) = 2cos(z) cos(k)

Here a is a constant.

navsheen mattoo , 10 Years ago

Grade 11