问题描述：
1.What is the measure of one exterior angle of a regular polygon having 40 sides?
2.To the nearest thousandth,what is tan (77o)
3.When the angle of elevation to the sun is 26o,a flagpole casts a shadow that is 82 feet long.What is the height of the flagpole to the nearest foot?
9
4.What is the value of ∑ 2k – 3
k = 4
5.1.Find the sum of the infinite geometric series:3 + 1.8 + 1.08 + 0.648 + …
2.To the nearest thousandth,what is tan (77o)
3.When the angle of elevation to the sun is 26o,a flagpole casts a shadow that is 82 feet long.What is the height of the flagpole to the nearest foot?
9
4.What is the value of ∑ 2k – 3
k = 4
5.1.Find the sum of the infinite geometric series:3 + 1.8 + 1.08 + 0.648 + …
问题解答：
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