A right triangle will have 2.2 km as its hypotenuse, with an angle of 0.5 degrees and an unknown height (see attachment).
Remember to apply the trigonometric ratios: sine, cosine, and tangent for right triangles. Sin<span>θ = opposite side/hypotenuse </span>Cos<span>θ = adjacent side/hypotenuse </span>tan<span>θ = opposite side / adjacent side </span>In this scenario, θ signifies the angle (not the right angle), which is given as 0.5°.
For this problem, we use sine as we have the side opposite the angle (the unknown height h) and the hypotenuse, with sine relating these two sides.
Let h represent the unknown opposite side, the height. sin(0.5°) = h / (2.2km) h = (2.2km)sin(0.5<span>°) h = 0.019 km
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