【进阶级练习题99】8 H% r3 P- {# }
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求: , o% d4 L3 C: t1. AB 之距离为何? " V: E; d8 H; T: t. [2 ^; u- { a. 75.9945 b. 75.9495 c. 75.49950 ^) S# e! l- X! n/ J
2. ∠ABC 之角度值为何?8 ^% C( E$ E& U% E
a. 66.1379° b. 66.3179° c. 66.3719°& { X! r' j1 a' A; v/ h' k j
3. 此图围成之面积为何? + z/ O" a0 d6 T; [9 E a. 3741.6436 b. 3741.4636 c. 3741.3466" D! F q7 \4 L
) e4 f# i9 M; ?! C' a' T[ 本帖最后由 shaonx 于 2009-6-17 21:49 编辑 ]
1. AB 之距离为何? ' m) @+ N/ g+ O" R b. 75.9495' t. f) S+ o/ m1 ^+ w. ~! N6 q
2. ∠ABC 之角度值为何?, F1 W. L; O* u4 M
b. 66.3179° # X2 f* N. o9 O# _% r9 T
3. 此图围成之面积为何?" Z6 @& x/ ], d* _* ^
a. 3741.6436