Question

An aeroplane is flying at a height of 300 m above ground flowing at the side angle of depression is 45 and 60 find width of the river

Answer 1

tan 45° = 300/y

1 = 300/y

y = 300

tan 60° = 300/x

√3 = 300/x

x = 300/√3

x = 100√3

Width of river = x + y

= 300 + 100√3

= 300 + 173.2

= 473.2 m