- #1

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- Thread starter tina_081493
- Start date

- #1

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- #2

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Tip: Square x and y and try to add them. Then try to subtitue θ.

- #3

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- #4

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Could you write down your final result? I doubt that it is a circle equation...

- #5

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(cosθ)^2+(sinθ)^2+2cosθsinθ=1

Am I going to need to use some kind of trig substitution to solve this now?

- #6

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If you square x and y, you get respectively: x

Now you've got to add the two equations and apply the distributive law to the second part in order to get rid of the cos

- #7

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Because of the r

- #8

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x

- #9

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What do I substitute theta with?

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