Given the vector OP = i + j, the direction of this vector is:
90°.
60°.
45°.
30°.
Given the vectors r and p. Evaluating r + p gives:
D.
A.
C.
B.
The direction of the vector -3i -3j is:
225°.
135°.
315°.
Given that a = 3i + 4j and b = i − 2j, the |a + b| is:
4√5.
5√4.
2√5.
5√2.
Given the vector OP = -4i + 3j, |OP| is:
1.
25.
5.
7.
