JAMB - Mathematics (1986 - No. 32)
A girl walks 45 meters in the direction 050o from a point Q to a point X. She then walks 24 meters in the direction 140o from X to a point Y. How far is she then from Q?
69m
57m
51m
21m
Spiegazione
QY = 452 + 242 = 2025 + 576
= 2601
QY = \(\sqrt{2601}\)
= 51
= 2601
QY = \(\sqrt{2601}\)
= 51