Finding Areas with Trigonometry. Objectives. I can use trigonometry to find the area of a triangle. Practice. Find the area of a regular triangle with a side length of 18.6 meters. A B C D. A. 346 m 2 B. 299.6 m 2 C. 173 m 2 D. 149.8 m 2. Next Application….
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Finding Areas with Trigonometry
Find the area of a regular triangle with a side length of 18.6 meters.
using sides h and a?
solve for “h”!
Area = ½ bcsinA = ½ absinC = ½ ac sinB
≈ 2288.87 m2