tan sin cos
2017/07/03 23:15
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標題:
tan sin cos
發問:
Find the value of each of the following. 1. cos60/cos30 2.tan22tan68
最佳解答:
As follows~ 圖片參考:http://i248.photobucket.com/albums/gg191/ncy_0916/sincos.jpg?t=1205412705 2008-03-13 20:54:00 補充: tan x = 1 / tan(90° ﹣x)
其他解答:
1. cos60/cos30 = (1/2)/(√3/2) = 1/√3 = √3/3 2.tan22tan68 = tan22tan(90-68) = tan22 * 1/tan22 = tan22/tan22 = 1
tan sin cos
發問:
Find the value of each of the following. 1. cos60/cos30 2.tan22tan68
最佳解答:
As follows~ 圖片參考:http://i248.photobucket.com/albums/gg191/ncy_0916/sincos.jpg?t=1205412705 2008-03-13 20:54:00 補充: tan x = 1 / tan(90° ﹣x)
其他解答:
1. cos60/cos30 = (1/2)/(√3/2) = 1/√3 = √3/3 2.tan22tan68 = tan22tan(90-68) = tan22 * 1/tan22 = tan22/tan22 = 1
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