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OpenStudy (anonymous):
the vector,r, is given by r = (cosx + 2sinx)i +(sinx-2cosx)j show that the modulus of r is independent of x
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OpenStudy (amistre64):
im sure if you simply fine the length of the vector that it all cancels out to 2
OpenStudy (amistre64):
or maybe 4 :)
OpenStudy (amistre64):
or 5, and thats my final assumption
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