7315 Q₁. Find the angle between every two vectors below (Answer two only): a) d=i+2j-k and e--i+j-2k b) f-3i+2k and g=4i+4j-2k c) m=i-2j+3k and n=2i-j+5k

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A: The given matrix is; M= -5 2       , N= -14 14         1  4                -2   -20.

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A: the solution consists of substitution

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A: To be explained : Calculation of slope of Secant line

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A: as per the company rule we are supposed to answer only the first question and rest can be reposted.

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A: