Question

Example 2 : Resultant of two vectors A and B is R
whose magnitude is equal to A & is perpendicular to
vector Á. What is the angle between A and B?​

Answer 1

Answer:

since required angle is angle between two vector are in same plane which is 180-c. hence using sinc=mag(resultant/vector b)=b/2/b=1/2,c=30,hence 180-c=180–30=150 ans.