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A ship sails at a constant speed straight towards the… | StemPy Lab
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A ship sails at a constant speed straight towards the foot of a cliff. The angle of depression of the ship is 30°, and 20 minutes later it is 45°. How many more minutes does the ship need to reach the foot?
Mathematics
Hard
High School (9–10)
General
Trigonometry › Heights and Distances
Olympiad
SAT
Created by
StemPy Lab
A ship sails at a constant speed straight towards the foot of a cliff. The angle of depression of the ship is
30
°
30°
30°
, and
20
20
20
minutes later it is
45
°
45°
45°
. How many more minutes does the ship need to reach the foot?
14.64
14.64
14.64
minutes
27.32
27.32
27.32
minutes
40.00
40.00
40.00
minutes
47.32
47.32
47.32
minutes
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← A boat sails straight towards a cliff 168 m high. The angle of depression of the boat is 30° and 9 seconds later it is 60°. Find the speed of the boat in metres per second.
On level ground, the shadow of a tower is 84 m longer when the Sun's angle of elevation is 30° than when it is 60°. Find the height of the tower in metres. →
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Trigonometry › Heights and Distances
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