Find sin(x/2), cos(x/2), and tan(x/2) from the given information.
cot(x)=13, 180 degree< x< 270 degree
Thanks!!
Trigonometry
2011-09-29 8:23 pm
回答 (1)
2011-09-29 8:43 pm
收錄日期: 2021-04-23 20:45:35
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