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Mathematics 26 Online
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

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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