Compute (mathbf{a} cdot mathbf{b}). (mathbf{a} = 8mathbf{i} - 8mathbf{j} - 9mathbf{k}), (mathbf{b} = -2mathbf{i} + 6mathbf{j} - 7mathbf{k}) A. 6,529 B. (langle 110, 74, 32 angle) C. (langle -16, -48, 63 angle) D. -1

          Compute (mathbf{a} cdot mathbf{b}).
(mathbf{a} = 8mathbf{i} - 8mathbf{j} - 9mathbf{k}), (mathbf{b} = -2mathbf{i} + 6mathbf{j} - 7mathbf{k})
A. 6,529
B. (langle 110, 74, 32 
angle)
C. (langle -16, -48, 63 
angle)
D. -1

Added by Sean F.

Calculus: Early Transcendentals

James Stewart 8th Edition

Instant Answer

Solved by Expert Adi S

07/15/2023

Step 1

First, we need to find the cross product of vectors a and b: a x b = (8i ~ 8j - 9k) x (-2i + 6j - 7k) = (-72i - 14j - 40k) Show more…

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Compute a · b. a = 8i - 8j - 9k, b = -2i + 6j - 7k A. 6,529 B. <110, 74, 32> C. <-16, -48, 63> D. -1

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Compute (mathbf{a} cdot mathbf{b}). (mathbf{a} = 8mathbf{i} - 8mathbf{j} - 9mathbf{k}), (mathbf{b} = -2mathbf{i} + 6mathbf{j} - 7mathbf{k}) A. 6,529 B. (langle 110, 74, 32 angle) C. (langle -16, -48, 63 angle) D. -1

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