Given the vectors a and b, a + b is:
D.
B.
C.
A.
Given the vectors p and r, then p - r is:
Given the vector OP = i + j, the direction of this vector is:
60°.
90°.
30°.
45°.
Given that OP = 3i − 5j and OQ= −2i + j, the vector QP is:
i - 4j.
-5i + 6j.
5i - 4j.
5i - 6j.
The direction of the vector -3i -3j is:
225°.
315°.
135°.
