因明日(周日)将暂离申城,外出有事,故本题提早一天发表。9 q e: s0 E$ D# `6 d& m2 D i) c
5 E5 I& I) p" A4 y) M 【进阶级练习题75】 + Y! L' B: A/ s6 Y" o $ I; P( X1 L( E. j) H- x求: 8 ?3 S/ {7 t2 y; v1. AB 之距离为何?1 L7 G6 U C. n* v, ?
a. 75.9714 b. 75.9417 c. 75.9174 6 ~. h1 p" ^9 c O( G9 j. ^2.∠ABC 之角度值为何?5 H) T0 X ^) _& ?( E+ _9 j
a. 66.337° b. 66.373° c. 66.733°4 F5 W. E1 j8 i1 f( l0 y9 S) u
3. 此图围成之面积为何? 1 g4 I* B* `& t2 m+ _4 O" X7 E- g a. 3738.5823 b. 3738.8523 c. 3738.2358