A cliff on the bank of a river is 300 meter hig... - JAMB Mathematics 2009 Question
A cliff on the bank of a river is 300 meter high. if the angle of depression of a point on the opposite side of the river is 60o, find the width of the river.
A
100m
B
75√3 m
C
100√3m
D
200√3m
correct option: c
| Tan 60 = | 300 |
| x |
| x = | 300 |
| Tan 60 |
| x = | 300 |
| √3 |
x = (300/√3) x (√3/√3)
| x = | 300√3 |
| .....3 |
x = 100√3
Please share this, thanks:
Add your answer
No responses