Question

Q7) The resultant of two vectors and is perpendicular to the vector

and its magnitude is equal to half of the magnitude of the vector . Find

out the angle between & ​

Answer 1

Answer:

to find the magnitude, which is 8.6. Apply the equation theta = tan–1(y/x) to find the angle: tan–1(–7.0/–5.0) = 54 degrees. However, note that the angle must really be between 180 degrees and 270 degrees because both vector components are negative.

Answer 2

Answer:

to find the magnitude, which is 8.6. Apply the equation theta = tan–1(y/x) to find the angle: tan–1(–7.0/–5.0) = 54 degrees. However, note that the angle must really be between 180 degrees and 270 degrees because both vector components are negative.

Explanation: