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

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

Grade:12

1 Answers

Arun
25750 Points
6 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° 

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