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12-12-2020
Mathematics

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Given the vectors a and b, with lengths 21 and 44 respectively, and cosine of the angle between them equal to StartFraction 7 Over 12 EndFraction, find the scalar projection of a onto b and a · b.

ab =

a · b =

Given the vectors a and b with lengths 21 and 44 respectively and cosine of the angle between them equal to StartFraction 7 Over 12 EndFraction find the scalar class=

Respuesta :

18-12-2020

Answer:

ab= 49/4

a•b =539

Step-by-step explanation:

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