# Pre-Calculus

posted by
**Tonya**
.

Please check:

1.Find polar equation of x^2 + y^2 = 10y

r^2 for x^2 + y^2 and sin(theta sin for y

=r^2=10sin(theta)

2.Find polar equation:

y=5

r=5/sin

3.Polar equation is r=2costheta + 3 sin theta

Find rectangular equation

x^2+y^2 =x^2 + y^2 =2x+3y