【进阶级练习题99】 . k* U$ M; J* W5 c- w+ ], }3 D6 b* l' D% s/ N& y
求: 0 w& Z" o* u& ~( {0 l3 m1. AB 之距离为何? " I, k; a8 j0 r G1 l a. 75.9945 b. 75.9495 c. 75.4995% Y+ O2 h6 }" e. f3 W) x
2. ∠ABC 之角度值为何?" O( M* o* b2 M2 J7 d; C
a. 66.1379° b. 66.3179° c. 66.3719°$ B; G% U) {# L. m
3. 此图围成之面积为何?6 u* S5 o6 Q1 E: K* \4 U' O' a9 ~
a. 3741.6436 b. 3741.4636 c. 3741.3466. N) ~/ F3 {* d
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[ 本帖最后由 shaonx 于 2009-6-17 21:49 编辑 ]