Processing math: 100%
Home / Aptitude Tests / Further Mathematics / P and Q are the poin...

P and Q are the points (3, 1) and (7, 4) respectively. Fi...

P and Q are the points (3, 1) and (7, 4) respectively. Find the unit vector along PQ.

A.

(43)

B.

(0.60.8)

C.

(0.80.6)

D.

(0.80.6)

Correct answer is C

PQ=(7341)

=(43)

ˆn=PQ|PQ|

|PQ|=42+32=25=5

ˆn=15(43)=(0.80.6)