【进阶级练习题99】, o+ C3 J% c( O3 M4 o
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求:# n5 l( F/ y! o9 M
1. AB 之距离为何?- v+ t7 T2 f, r2 `+ o$ r
a. 75.9945 b. 75.9495 c. 75.4995 / A' O/ d, U2 x% q) b" n/ }2. ∠ABC 之角度值为何? $ k& E7 E* H3 w; Z a. 66.1379° b. 66.3179° c. 66.3719°1 Q$ o) U" @! i; `: O( q
3. 此图围成之面积为何?1 _% r: m* Z. E9 T! W# n. z
a. 3741.6436 b. 3741.4636 c. 3741.3466% _$ ^/ Y' J4 P/ u2 ^
+ f8 @2 @; g. X" ]; l
[ 本帖最后由 shaonx 于 2009-6-17 21:49 编辑 ]
shaonx老师今天晚上把条件给全了,这就简单多了~~~) U. v" d4 [) r: A+ p" T: `
1. AB 之距离为何? + `( Q* C- u: z. h, c4 l b. 75.9495 , L2 S* f/ F& I, U2. ∠ABC 之角度值为何? 6 h" n/ }; R4 h b. 66.3179°, U2 [9 z7 I( y2 r
3. 此图围成之面积为何? 1 v- C! c! Z8 B0 W$ A) h a. 3741.6436