Figure 4.1 shows the orientation of two vectors u and v in the XY plane.
If u =a cap i + b cap j and
v = p cap i + q cap j
which of the following is correct?
(a) a and p are positive while b and q are negative.
(b) a, p and b are positive while q is negative.
(c) a, q and b are positive while p is negative.
(d) a, b, p and q are all positive.
