| π |
| 6 |
| ||
| 2 |
| 1 |
| 2 |
=
| ||
| 2 |
| 1 |
| 2 |
=sin(2x+
| π |
| 6 |
所以函数f(x)的单调递增区间是〔kπ−
| π |
| 3 |
| π |
| 6 |
(Ⅱ)因为f(A)=
| 1 |
| 2 |
| π |
| 6 |
| 1 |
| 2 |
又0<A<π所以
| π |
| 6 |
| π |
| 6 |
| 13π |
| 6 |
从而2A+
| π |
| 6 |
| 5π |
| 6 |
| π |
| 3 |
在△ABC中,∵a=1,b+c=2,A=
| π |
| 3 |
∴1=b2+c2-2bccosA,即1=4-3bc.
故bc=1
从而S△ABC=
| 1 |
| 2 |
| ||
| 4 |
| π |
| 6 |
| 1 |
| 2 |
| π |
| 6 |
| ||
| 2 |
| 1 |
| 2 |
| ||
| 2 |
| 1 |
| 2 |
| π |
| 6 |
| π |
| 3 |
| π |
| 6 |
| 1 |
| 2 |
| π |
| 6 |
| 1 |
| 2 |
| π |
| 6 |
| π |
| 6 |
| 13π |
| 6 |
| π |
| 6 |
| 5π |
| 6 |
| π |
| 3 |
| π |
| 3 |
| 1 |
| 2 |
| ||
| 4 |