在△ABC中,内角A,B,C的对边分别为a,b,c.已知cosA=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102747346433415/SYS201311031027473464334016_ST/0.png)
,sinB=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102747346433415/SYS201311031027473464334016_ST/1.png)
C.
(1)求tanC的值;
(2)若a=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102747346433415/SYS201311031027473464334016_ST/2.png)
,求△ABC的面积.
考点分析:
相关试题推荐
在直角坐标系xOy中,动点A,B分别在射线
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102747346433415/SYS201311031027473464334015_ST/0.png)
和
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102747346433415/SYS201311031027473464334015_ST/1.png)
上运动,且△OAB的面积为1.则点A,B的横坐标之积为
;△OAB周长的最小值是
.
查看答案
如图,过抛物线y
2=8x的焦点F的直线交抛物线与圆(x-2)
2+y
2=4于A,B,C,D四点,则|AB|•|CD|=
.
查看答案
抛物线y
2=6x的焦点为F,其上任意一点A(x,y),点P(2,2),则|AF|+|AP|的最小值为
.
查看答案
设直线x-my-1=0与圆(x-1)
2+(y-2)
2=4相交于A,B两点,且弦AB的长为
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102747346433415/SYS201311031027473464334012_ST/0.png)
,则实数m的值是
.
查看答案
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102747346433415/SYS201311031027473464334011_ST/images0.png)
如图所示,圆O的直径AB=6,C为圆周上一点,BC=3过C作圆的切线l,过A作l的垂线AD,垂足为D,则∠DAC=
.
查看答案