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  1.Whatisthemeasureofoneexteriorangleofaregularpolygonhaving40sides?2.Tothenearestthousandth,whatistan(77o)3.Whentheangleofelevationtothesunis26o,aflagpolecastsashadowthatis82feetlong.Whatistheheightofthefl

  1.Whatisthemeasureofoneexteriorangleofaregularpolygonhaving40sides?

  2.Tothenearestthousandth,whatistan(77o)

  3.Whentheangleofelevationtothesunis26o,aflagpolecastsashadowthatis82feetlong.Whatistheheightoftheflagpoletothenearestfoot?

  9

  4.Whatisthevalueof∑2k–3

  k=4

  5.1.Findthesumoftheinfinitegeometricseries:3+1.8+1.08+0.648+…

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2020-05-0223:01
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史海滨

  1.9°(正四十边型的外角度数)

  2.4.331(tan77°的精确到千分位的数字)

  3.tan26*82=40.0feet(仰角26°,旗杆投影82英尺)

  4.from4to(求和)

  5+7+9+11+13+15=60

  5.7.5(等比数列无穷项和)

2020-05-02 23:02:27
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