Given x = 1 (cot z – cosec z).
Find the value (s) of tan z.
Thank you.
圖片參考：http://l.yimg.com/f/i/tw/ugc/rte/smiley_1.gif
更新1:
Please show steps.
F.4 Additional Mathematics
2009-04-08 6:58 am
x is a common root of the equations y^2-2y cosec z – 4 =0 and y^2-2y cot z – 2=0 where 0(degree) <z <360(degree).
Given x = 1 (cot z – cosec z).
Find the value (s) of tan z.
Thank you.
圖片參考：http://l.yimg.com/f/i/tw/ugc/rte/smiley_1.gif
Given x = 1 (cot z – cosec z).
Find the value (s) of tan z.
Thank you.
圖片參考：http://l.yimg.com/f/i/tw/ugc/rte/smiley_1.gif
回答 (2)
2009-04-08 8:53 am
✔ 最佳答案
As follows:圖片參考：http://hk.geocities.com/stevieg_1023/0ADDG1.gif
圖片參考：http://hk.geocities.com/stevieg_1023/0ADDG2.gif
2009-04-08 8:22 am
x = 1 (cot z – cosec z) should be x = 1/(cot z – cosec z)
(It can be deduced, why given?)
tan z = 2x/(1-x)
(It can be deduced, why given?)
tan z = 2x/(1-x)
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