Vector vec(A) s 2cm long and is 60^(@) above the x-axis in the first quadrant, vector vec(B) is 2 cm long and is 60^(@) below the x-axis is the fourth quadrant. Find vec(A) + vec(B).

Vector vec(A) s 2cm long and is 60^(@) above the x-axis in the first q

1.	Vector vec(A) s 2cm long and is 60^(@) above the x-axis in the first quadrant, vector vec(B) is 2 cm long and is 60^(@) below the x-axis is the fourth quadrant. Find vec(A) + vec(B).
Answer» SOLUTION : `VEC(R) = vec(A) + vec(B)` `vec(R) = 2 cos 60^(@)HAT(i) + 2 sin 60hat(j) + 2 cos 60 hat(i) - 2 sin 60 hat(j)` `vec(R) = 4 cos 60 hat(i) = 2hat(i)` `therefore 2cm`, along x-axis