Question

if the scalar component of A= 2i+3j and vector B= 3i+4j is 18/n

Answer 1

Answer:

n=5

scalar component of A vector on B vector is

AcosΦ where Φ is the angle bet. the 2 vectors A and B. now AcosΦ can be multiplied by B on numerator and denominator .so we get ABcosΦ/B which can be further written as

A•B/|B| so calculate further and get the value of n as 5.

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