T 150 cm Figure 14
Ratios
A ratio is a comparison between two numbers of the same kind. It represents how many times one number contains another. It also represents how small or large one number is compared to the other.
Trigonometric Ratios
Trigonometric ratios give values of trigonometric functions. It always deals with triangles that have one angle measuring 90 degrees. These triangles are right-angled. We take the ratio of sides of these triangles.
angle of depression from his eyes to the bottom of the mirror is 128, while the angle
of elevation to the top of the mirror is 118. Find the vertical dimension of the mirror
(Figure 14).
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