Answer:
cd
Step-by-step explanation:
13 is 141. A octagon has 1080 degrees and if you add all the angles up you get 939 and 1080-930=141
Answer:
53.8°
Step-by-step explanation:
Use cosine law
67² = 72² + 76² - 2(72)(76)cosX
cosX = 719/1216
X = 53.75190075
Since the area of a circle is π
, and our radius is 9 we know the total area to be 254.469, and the ratio of sector area to total area is 169.56/254.469 = .6663. There are 360 degrees in a circle, so:
≈ 240°
240 degrees