Hi

I am having trouble with the following question:

How would you change the following equation in r and to an equivalent equation in x and y?

Another question:

what have i done wrong

P.S

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- Oct 20th 2010, 02:43 AMPaymemoneyPolar to Cartesian Problem
Hi

I am having trouble with the following question:

How would you change the following equation in r and to an equivalent equation in x and y?

Another question:

what have i done wrong

P.S - Oct 20th 2010, 02:53 AMAlso sprach Zarathustra
Here:

Transformation from Polar to Cartesian Coordinates

In second one:

- Oct 20th 2010, 03:16 AMPaymemoney
in the first question i am stuck on what does equal to?

i know that sin\theta = so what is ? - Oct 20th 2010, 03:17 AMAlso sprach Zarathustra
sin(2t)=2sin(t)cos(t)

- Oct 20th 2010, 03:22 AMPaymemoney
oh ok, knew it was an identity

- Oct 20th 2010, 03:31 AMPaymemoney
i get for question 1: however the book's answer is .

am i wrong or the book? - Oct 20th 2010, 03:45 AMAlso sprach Zarathustra

Hence, you and your book mistaken... - Oct 20th 2010, 04:01 AMPaymemoney
srry my mistake i posted the wrong question, its suppose to be

- Oct 20th 2010, 04:06 AMPaymemoney
just solved it

- Oct 20th 2010, 04:06 AMAlso sprach Zarathustra
- Oct 20th 2010, 04:11 AMmr fantastic