How about this one?

r^2= sec^2(theta) - tan^2(theta)

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- Dec 15th 2008, 07:44 PMcmr7Polar to rectangular form
How about this one?

r^2= sec^2(theta) - tan^2(theta) - Dec 15th 2008, 07:48 PMMathstud28
:(

- Dec 15th 2008, 07:56 PMcmr7
Thank you!!!!!

- Dec 15th 2008, 08:02 PMSoroban
Hello, cmr7!

Someone created this problem as a joke . . .

Quote:

Write in rectangular form: .

We're expected to know this identity: .

. . and this conversion: .

So: .

- Dec 15th 2008, 08:06 PMMathstud28
- Dec 15th 2008, 08:08 PMcmr7me too
I am in the class right now so all this should be fresh on my mind and it got past me also. I am going on 4 night sin a row of studying for this final. Maybe I should just get some sleep now haha!