Question

How do you convert `(-1, 405^circ)` from polar to cartesian coordinates?

Answer 1

`(-sqrt2/2,-sqrt2/2)`

Explanation:

`(r,theta)->(x,y)=>(rcostheta,rsintheta)`

`(r,theta)=(-1,405^circ)`
`(x,y)=(-cos(405),-sin(405))=(-sqrt2/2,-sqrt2/2)`