You stand on the north bank of a river and look due south at a tree on the opposite bank. Your helper on the opposite bank measures 35 yards due east to a second tree. You must rotate your transit through an angle of 12 degrees to point toward the second tree. How wide is the river?
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.
You stand on the north bank of a river and look due south at a tree on the opposite bank. Your helper on the opposite bank measures 35 yards due east to a second tree. You must rotate your transit through an
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