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Grade 12th passWave Motion

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Profile image of Medical Student
8 Years agoGrade 12th pass
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1 Answer

Profile image of Arun
8 Years ago
Dear student
 
for finding angle we use dot product
 
A . B = 8 + 18 + 2 = |A| |B| cos @
 
28 = sqrt (14) * sqrt (56) cos@
 
28 / 14 *2 = cos@
 
cos@ = 1
 
@ = 0 degree