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3 years ago

Two vectors and are given by and . If these two vectors are drawn starting at the same point, what is the angle between them

Mathematics

1 answer:

castortr0y [4]3 years ago

7 0

Answer: hello your question is incomplete below is the complete question

The Two vectors; A = 5i + 6j +7k and B = 3i -8j +2k.

answer;

angle = 102°

Step-by-step explanation:

multiplying the vectors

A.B = |A| * |B|* cosθ

hence : Cosθ = (Ai*Bi )+ (Aj*Bj) + ( Ak*Bk/ (√A^2 *√B^2 )

= 15 - 48 + 14 /(√25+26+29) * (√9+64+4)

= -0.206448454

θ = cos^-1 ( -0.206448454) = 101.9° ≈ 102°

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