产U.了想; (2)若001与00:的半径分别是方程护一4x+3一。的两根,求△日心义)的周长.⑥ 6.已知△训月z叉少中,边邵的长和乙A的余弦值分别是方程(二一粤)(x’--3)一。的两个实数根.若边Ac一~/“’一、一2、一’-一曰J’J’/、~’‘、~一了万,求边AB的长.⑩ 7.如图,在△月仪少中,脚 U. wanted to produce U. (2) If the radius of 001 and 00: is the equation of protection 4x+3. Two of the roots, seeking the △ daily sense.) 6. Known △ training month z fork Shaozhong, Bian Shao’s long and B’s cosine values ​​are equations (2 Yi Yue) (x’-- 3) One. The two real number roots. If the side Ac a ~ / "’a, a two, a’-a 曰 J’J’ /, ~’’, ~ a million, seeking the long side of the AB.10 , in the lunar instrument less, feet