Math Problem Statement
When the moon is exactly half full, the earth, moon, and sun form a right angle (see the figure). At that time the angle formed by the sun, earth, and moon (using the earth as its vertex) is measured to be 89.85°. If the distance from the earth to the moon is 240,000 mi, estimate the distance from the earth to the sun. (Round your answer to one decimal place.)
Solution
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Math Problem Analysis
Mathematical Concepts
Trigonometry
Right Triangles
Sine Function
Formulas
sin(θ) = opposite / hypotenuse
ES = EM / sin(θ)
Theorems
Trigonometric Ratios in Right Triangles
Suitable Grade Level
Grades 9-12
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