Question

convert r=2a(1+sin(2t)) into cartesian equation

Answer 1

nbd, sin(2t)=2sin(t)cos(t)=2(y/r)(x/r)=2yx/r^2

Answer 2

whats nbd and how do u 2sin(t)cos(t)=sin(2t) is that an identity?

Answer 3

The formulae i am gonna use :
sin(2t)=2sint*cost
1=sint^2+cost^2
then sint=y/r.cost=x/r,and r=root (x^2+y^2)

i skipped few steps,because of space....but tell me if u did not get it...