Question

Calculate the angle between the vectors: A? = 7.0i^-3.1j^-7.0k^ and B? = 8.1i^+3.0j^-6.7k^. 

          Calculate the angle between the vectors:
A? = 7.0i^-3.1j^-7.0k^ and B?  = 8.1i^+3.0j^-6.7k^.

Added by Billy B.

Calculus: Early Transcendentals
Calculus: Early Transcendentals
James Stewart 8th Edition
Chapter 12
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Calculate the angle between the vectors: A? = 7.0i^-3.1j^-7.0k^ and B? = 8.1i^+3.0j^-6.7k^.
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Transcript

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00:01 In this problem, we are given that there are two vectors.
00:03 Vector a, which is equal to 7 icap minus 3j cap, this is 3 .1 minus 7 k cap.
00:12 And we have another vector that's vector b, which is 8 .1 icap plus 3j cap minus 6 .7 kcap.
00:23 And we are required to get the angle between these two vectors.
00:27 So we simply use this formula according to which a.
00:32 .b is ab cost theta.
00:34 So let's first find out the magnitude of vector a and vector b...
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