(12 ÷ 3) - 1
Twelve divided by three is four. Four minus 1 is three.
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Answer: 0.028571428571429
A practical application of the trigonometric functions is to find the measure of lengths that you cannot measure. Very frequently, angles of depression and elevation are used in these types of problems.
Angle of Depression: The angle measured from the horizon or horizontal line, down.
Angle of Elevation: The angle measure from the horizon or horizontal line, up.