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Grade: 11

                        

The magnitude of vector A - vector B = A+B Then find the angle between vector A and vector B ? waiting for reply

9 years ago

Answers : (3)

vikas askiitian expert
509 Points
							

magnitude[A-B] = magnitude[A+B]

squaring both sides

A2 + B2 - 2A.B = A2 + B2 + 2A.B

 A.B = 0

A.B = ABCOS@ so

cos@ = 0

@ = pi/2

therefore angel bw A,B is 90o ...

 

approve if u like my ans

9 years ago
vijesh jayan
49 Points
							

Thanks bro!!!!!!!!!!!!!!!!!!!!!

9 years ago
vikas askiitian expert
509 Points
							

welcome my friend ..........

9 years ago
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