Question

why the magnitude of the resultant decreases when the angle between two vector increases??​

Answer 1

Answer:

Examples of vectors are forces 

You and I pull with a northward force of 200 N on a 10 kg box. 

The resultant force = 200 + 200 = 400 

Answer 2

Answer:

Resultant of two vectors A & B is calculated as sqrt.(A2 +B2+2ABcos(theta)) where theta is angle between them. As theta increses from 0 to 180, cos(theta) varies from 1 to -1. So magnitude decreses with increase in angle between them...