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i didnot understand calculation so plz wanna compelete solution........

i didnot understand calculation so plz wanna compelete solution........

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Grade:12th pass

1 Answers

Arun
25750 Points
5 years ago
Dear student
 
for angle, take dot product
 
A . B = |A| |B| cos theta
 
2 * 4 + 3 * 6 + -1 * -2 = sqrt (14) * sqrt(56) cos theta
 
cos theta = 28 / 14 * 2 = 1
 
theta = 0 degree

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