SOLUTION: If {{{x = (a) sin (theeta) - (b) cos (theeta)}}} and {{{y = (a) cos (theeta) + (b) sin (theeta)}}}, show that {{{(x)^2 + (y)^2 = (a)^2 + (b)^2}}} .

Question 438253: If and , show that .

Found 2 solutions by robertb, Alan3354:
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!

Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
It's theta, not theeta.
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I got an email and looked it up, and it is "theeta" in some other language.
I don't know what that language is, tho.
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I replied to you email questions, but I get a kick-back on the email I send.

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