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Mathematics 11 Online
OpenStudy (anonymous):

Precalc help please? Write the polar equation in rectangular form.

OpenStudy (anonymous):

\[r^2\sin2\theta=8\]

OpenStudy (ranga):

Expand sin(2theta). Replace rcos(theta) with x and rsin(theta) with y.

OpenStudy (anonymous):

I don't know what you mean by expand?

OpenStudy (ranga):

There is a double angle formula for sine. sin(2A) = 2sin(A)cos(A)

OpenStudy (anonymous):

Oh of course! Thank you!

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