help plzs

[shorty]

convert the polar equation to a rectangler equation r= 8 cos a+ 2 sin a

[OfficeShredder]

Do you know how to express cos(a) and sin(a) in terms of x and y? If not, start by putting x and y in terms of r and a

[HallsofIvy]

Start by multiplying the entire equation by r. Then think about what
r cos(a) and r sin(a) are.