Optimization with angles. A drainage canal is constructed so its cross section isshaped like a trapezoid with equally sloping sides. If the bottom and sides each have length 5 feet, what angle θ would yield the greatest cross-sectional area?
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.
Optimization with angles.
A drainage canal is constructed so its cross section is
shaped like a trapezoid with equally sloping sides. If the bottom and sides each have length 5 feet, what angle θ would yield the greatest cross-sectional area?
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