Question

The scalar sum of two vectors is 18.The vector sum of their is 12.If resultant vector is perpendicular to the smaller vector,then find the two vector​

Answer 1

Answer is 13 and 5 ...

Scalar addition ,

13+5 = 18

Vector addition

By pythagoras theorem ,,

169-25 = R sq.units

12 =R

Also,, resultant vector is equal to

R= Under root of A sq. + B sq. + 2abCostheta