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Question

Find the scalar projection of the vector ^i+3^j+7^k on the vector 2^i3^j+6^k.

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Solution

The scalar projection of vector i+3j+7k on the vector 2i3j+6k is (i+3j+7k).(2i3j+6k)|2i3j+6k|
=29+4249=357=5

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