The jet fighter will travel 10641.77 ft far across the sea.
It is given that angle of depression it land at is 20°.
It is required to find how far the sea will travel.
What is the trigonometric ratio?
The trigonometric ratio is defined as the ratio of the pair of a right-angled triangle.
We have an angle of depression = 20°
The height from the sea level = 10,000 ft
From the figure:
[tex]\rm cos20 = \frac{Adjacent}{Hypotenuse}[/tex]
[tex]\rm 0.939 = \frac{10000}{d}[/tex]
d = 10641.77 ft
Thus, the jet fighter will travel 10641.77 ft far across the sea.
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