Graphically solve the system of linear equations and explain what the point of intersection represents
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This is right triangle trig and you are looking for the height of the triangle. The reference angle is 18 degrees, the side adjacent to that angle is 4 and you are looking for the side opposite the reference angle. The trig identity that helps us find that missing side is tangent:
and 4 tan(18) = x.
x = 1.3 miles
and 4 tan(18) = x.
x = 1.3 miles