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OpenStudy (anonymous):
Verify that the distance between (r1, theta1) & (r2, theta2)= the square root of r1^2 +r2^2-2r1r2cos(theta1-theta2)
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OpenStudy (blockcolder):
Here's a drawing:|dw:1377733631687:dw|
OpenStudy (blockcolder):
You can then use the Law of Cosines to find d, which is the distance between (r1,theta1) and (r2, theta2).
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