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Trigonometric questions Solve the equation for 0o≦x≦360o. Leave your answers in terms ofπor correct to 2 decimal places. 2sinx cosx - sinx + 2cosx - 1 = 0 *360 degrees is larger or equal to x. *x is larger or equal to 0 degree.
最佳解答:
As follow AS~~~ 圖片參考:http://e.imagehost.org/0423/ScreenHunter_01_Jan_10_02_44.gif
其他解答:
2sinx cosx - sinx + 2cosx - 1 = 0 (2cosx - 1) sinx x + 2cosx - 1 = 0 (2cosx - 1) (sinx x + 1) = 0 2cosx - 1 = 0 or sinx x + 1 = 0 cosx = 1/2 or sinx = -1 x = Pi / 3 or x = 3 Pi / 26A560DB68EC65D60
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