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Grade 12General Physics

Q.Two vectors of magnitude 3 and 4 have a resultant of 5, the angle between them is Please answer with solution.

Profile image of Saad Khan
8 Years agoGrade 12
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1 Answer

Profile image of Arun
ApprovedApproved Tutor Answer8 Years ago
As we see, 
3,4 and 5 is pythagoruan triplet, hence bere we can say that vector of 3 and 4 unit make an angle of 90 degree between them.
 
There is another formula method to find the angle
√(3^2+4^(2 )+22.3.4.cos⁡θ ) = 5 
Θ = 90°