What is the Cartesian form of $( 7 , (25pi)/12 )$ ?

Question

1280 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-01-19T13:06:06

$(6.761,1,812)$

Polar form $(r,theta)$ may be converted to rectangular Cartesian form $(x,y)$ via the transormations :

$x=rcostheta and y=rsintheta$ .

So in this particular case we get

$x=7cos((25pi)/12)=6.761$

$y=7sin((25pi)/12)=1.812$

Hence the Cartesian form is $(6.761,1,812)$ .

What is the Cartesian form of ( 7 , (25pi)/12 ) ( 7 , (25pi)/12 ) ?