Given that a = 3i + 4j and b = i − 2j, the |a + b| is:
5√4.
5√2.
2√5.
4√5.
Given that OP = 3i − 5j and OQ= −2i + j, the vector QP is:
5i - 6j.
i - 4j.
5i - 4j.
-5i + 6j.
Given the vectors PQ and QR in the figure, then PR is:
a - b.
-a + b.
a + b.
-a - b.
The direction of the vector -3i -3j is:
315°.
225°.
135°.
45°.
The vector OP = i - j lies in the:
4th quadrant.
2nd quadrant.
1st quadrant.
3rd quadrant.
