Posted by **Josh** on Friday, July 29, 2011 at 3:37pm.

How can I convert polar coordinates to rectangular coordinates?

- Calculus -
**Reiny**, Friday, July 29, 2011 at 4:04pm
suppose you have a point (r,Ø)

Join the point to the origin and complete the right-angled triangle.

Call the point (r,Ø) as (x,y) in the rectangular system.

then

r^2 = x^2 + y^2

and tanØ = y/x

also :

x/r = cosØ ---> x = rcosØ

y/r=sinØ ---> y = rsinØ

Depending on the equation, you sometimes have to be very creative in converting from one system to the other.

Do you have an example?

## Answer This Question

## Related Questions

- trig - convert the point with polar coordinates (2,7pi/6) into rectangular ...
- precal - convert from rectangular coordinates to polar coordinates x=y
- pre calc.Math - Please help me any one of these please! Thank You to any one r=...
- Math - Convert ( 4, -pi/6) from polar coordinates to rectangular coordinates. I ...
- Pre-calculus; urgent ! Please help ! - 1.Graph the polar equation r=3-2sin(theta...
- Calculus please help ! - 1.Graph the polar equation r=3-2sin(theta) 2. Find the ...
- Pre-Calculus - Find the rectangular coordinates of the point with the given ...
- Pre-Calculus - Find the polar coordinates of each point with the given ...
- pre-calc help - Convert the rectangular coordinates to polar coordinates with r...
- pre-calc help - Convert the rectangular coordinates to polar coordinates with r...

More Related Questions