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-   -   Polar to Cartesian Coordinate Conversion Help (http://mymathforum.com/algebra/26664-polar-cartesian-coordinate-conversion-help.html)

swm06 April 13th, 2012 08:51 AM

Polar to Cartesian Coordinate Conversion Help
 
Convert the following point from a polar to cartesian coordinate.



=





= =



My answer:



However this is wrong. Where did I screw up?

soroban April 13th, 2012 09:32 AM

Re: Polar to Cartesian Coordinate Conversion Help
 
Hello, swm06!

Quote:













masters April 13th, 2012 09:34 AM

Re: Polar to Cartesian Coordinate Conversion Help
 
Quote:

Originally Posted by swm06
Convert the following point from a polar to cartesian coordinate.



=





= =



My answer:



However this is wrong. Where did I screw up?

Hi swm06,

You missed a sign when you found your x-coordinate. is negative. When you multiply by -1, it becomes positive.



That will make

You should rationalize your denominators in the end to arrive at

[color=#FF0000]A couple of minutes too slow for Soroban![/color]


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