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標題:

solve the following a.maths

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find the range of a where a greater then 0 and smaller than 360 degrees a) (2 sin sq. a ) smaller or equal than 1 b) (sin 2a + cos a ) smaller than 0 sorry for not knowing how to type maths symbols

最佳解答:

Explanation as follows: 圖片參考：http://i238.photobucket.com/albums/ff245/chocolate328154/Maths582.jpg?t=1230695225 Please go to http://i238.photobucket.com/albums/ff245/chocolate328154/Maths582.jpg if you cannot see the image. 2008-12-31 11:49:50 補充： For Q2, it is hard to solve the inequality directly, so the method of tabulation will help a lot in this Q.

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