1.
已知向量\( \overrightarrow{m}=( \sqrt {3}\sin x,\cos x)\),\( \overrightarrow{n}=(\cos x,\cos x)\),\(x∈R\),设\(f(x)= \overrightarrow{m}\cdot \overrightarrow{n}\).
\((1)\)求函数\(f(x)\)的解析式及单调递增区间;
\((2)\)在\(\triangle ABC\)中,\(a\),\(b\),\(c\)分别为内角\(A\),\(B\),\(C\)的对边,且\(a=1\),\(b+c=2.f(A)=1\),求\(\triangle ABC\)的面积.