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Trigonometry
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OpenStudy (anonymous):
convert r = 2sin2(theta) to rectangular coordinates
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OpenStudy (anonymous):
is it 2sin^2(theta) or 2sin(2theta) ?
OpenStudy (anonymous):
2sin(2theta)
OpenStudy (anonymous):
sin(2theta) = 2sin(theta)cos(theta)
OpenStudy (anonymous):
r = 4 sin(theta) cos(theta) r = 4 (y/r) (x/r) r = 4xy/r^2 r^2 r = 4xy (x^2 + y^2) sqrt(x^2+y^2) = 4xy
OpenStudy (anonymous):
thank you
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