Question

Why should be the angle thita between two vectors a and b for their resultant r to be maximum?

Answer 1

due to the triangle law of vector this point is applicable

Answer 2

Answer:

The theta should be the 0 degree between two vectors A and B for their resultant R to be maximum.

Explanation:

R = $\sqrt{A^{2}+B^{2} +2ABcos(theta)$

cos(theta) is maximum when theta = 0 ;

therefore, cos(theta)=1

R = $\sqrt{A^{2} +B^{2}+2AB }$

Hence, theta should be 0.

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