hannahgracew12
23.10.2019 •
Mathematics
What is the area of the sector bound by the center of the circle and arc cd in the circle below? circle a is shown with a radius labeled 6 feet and a central angle marked 30 degrees. 9.42 ft2 19.54 ft2 34.89 ft2 88.31 ft2
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Ответ:
Step-by-step explanation:
arccos(sin(5π/4))
= arccos(sin(-π/4))
= arccos(-√2/2)
= 3π/4.