5.函数的周期是___________;值域是______________________.
4.
3.已知是第二象限角,且.
2._____________________________________.
1.已知的值是__________________________.
14.设,当时,的最大值是4,
则___________________________..
13.中,三角形面积是12,则=_____________________.
12.已知m=(),n=,m// n,且,
=_________.
11.已知且,则________________________.
10.若,则=_______________________.