Question

A displacement vector, at an angle of 30° with
y-axis has an x-component of 10 units. Then the
magnitude of the vector is-​

Answer 1

Answer is 20

f sin(degree of angle)=10

f sin 30°=10

As we know,

sin 30°=1/2

Therefore,

f*1/2=10

f = 10*2

f = 20