i didnot understand calculation so plz wanna compelete solution........
Medical Student , 6 Years ago
Grade 12th pass
Wave Motion> i didnot understand calculation so plz wa...
1 Answers
Arun
Last Activity: 6 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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