If |u| = 12, |v| = 8, and u · v = 48, then the angle between |u| and |v| is _____. a. 0 degrees b. 30 degrees c. 60 degrees d. 90 degrees

asked Oct 28, 2019 42.6k views

3 votes

If |u| = 12, |v| = 8, and u · v = 48, then the angle between |u| and |v| is _____.

a. 0 degrees
b. 30 degrees
c. 60 degrees
d. 90 degrees

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3 votes

u . v = |u| |v| cos x

48 = 9*12 cos x

cos x = 48/96 = 1/2

x = 60 degrees answer

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