Question
Draw a sketch in each question leave the answer in surd form with rational denominator
From the top of a tower, the angle of depression of a boat is 30degree. If the tower is 20m high how far is the boat from the foot of the tower
From the top of a tower, the angle of depression of a boat is 30degree. If the tower is 20m high how far is the boat from the foot of the tower
Answers
oobleck
if you drew the sketch, and reviewed your basic trig functions, you can see that
20/x = tan30°
20/x = tan30°
mathhelper
Make a sketch and using the basic trig ratios, which you MUST learn, .....
x/20 = tan30° , where x is the distance between the boat and the tower along the horizontal.
= 20tan30° = .....
x/20 = tan30° , where x is the distance between the boat and the tower along the horizontal.
= 20tan30° = .....
mathhelper
oops, read the angle wrong,
use oobleck's solution
use oobleck's solution