Question

What is the Cartesian form of `( -1, (25pi)/8 )`?

Answer 1

`(0.924,0.383)`

Explanation:

`x=rcostheta,y=rsin theta`

`R=-1,theta=(25pi)/8`

`x=-1cos((25pi)/8),y=-1sin((25pi)/8)`

`x~~0.924,y~~0.383`

`(0.924,0.383)`