WAEC - Mathematics (2022 - No. 22)
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
3.962m
설명
Sin θ = \(\frac{opp}{hyp}\) → \(\frac{x}{6}\)
cross multiply:
sin53º * 6 = x
0.7986 * 6
4.792m