WAEC - Mathematics (2003 - No. 20)
A ladder, 6m long, leans against a vertical wall at an angle 53o to the horizontal. How high up the wall does the ladder reach?
3.611m
4.521m
4.792m
7.962m
설명
Sin 53 = \(\frac {h}{6} \)
h = 6 sin 53 = 6 x 0.7986
= 4.792m
h = 6 sin 53 = 6 x 0.7986
= 4.792m