Question

Find the Cartesian equation of x=2+sint and y=2cost-1

Answer 1

get an expression for \(\sin(t)\) and \(\cos(t)\) then use the identity: \(\sin^2(t)+\cos^2(t)=1\)

Answer 2

sint = x - 2
cost = (y + 1)/2

now use the identity sin^2t + cos^t = 1

Answer 3

Okay that's what I got. Thank you very much.

Answer 4

yw :)