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Grade 12Modern Physics

If vector A=B+C and the magnitude of vector A,B,C are 5,4,3 units respectively then the angle between vector A and C will be

Profile image of Shubham Sadashiv
8 Years agoGrade 12
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1 Answer

Profile image of Venkat
8 Years ago
 
A, B AND C will be sides of right triangle.
Angle between  A and C is alpha
A= hypotenuse side
B= opposite side
C = adjacent side
 
cos(alpha) = 3/5
alpha = 53.13 degrees
Hence, option (2)

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