Hello, Stevo_Evo_22!

A camera operator is positioned in a cherry-picker whose arm is 26m long

and inclined at 110° to the horizontal.

He is filming a cyclist who is racing towards him at 72 km/h.

He starts to film when the cyclist is 120m from the base of the cherry-picker.

Find a) the angle (angle of the camera's view of the cyclist)

when the camera operator starts filming

b) the angle five seconds after he starts filming. Code:

A * - - - - - - - - - - - H
\ * θ
\ *
\ *
\ *
26 \ *
\ *
\ 110° θ *
B * - - - - - - - - - - - * C
d

Let

Let = distance from the cyclist to the base of the cherry-picker

Note that: .

Law of Sines: .

. .

. .

. .

(a) When

. . Therefore: .

(b) The cyclist's speed is: .

In 5 seconds, he travels 100 m . . . Hence: .

Then: .

. . Therefore: .