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  1. ...min = 6 min ===== 11) The answer is E (1800). Votes that cast for the Independent candidate = 900 votes Votes that cast for...

    分類:科學及數學 > 數學 2008年11月19日

  2. 1. Your answer is correct. tan x = 0.083, so x = arctan (0.083) = 4.764 degree. 2. 2/(length of shadow) = tan 55, so length of shadow = 2/tan 55 = 2/1.428 =1.4 m. 3. Cannot see the figure. I guess it is as follow: Height when angle is 50 degree = 100 tan 50 Height when angle...

    分類:科學及數學 > 數學 2009年05月26日