/ W* j# x& j) }& N8 ]3 J7 K求: 3 X+ V4 q7 g( R n( e1. a 之角度值为何? % e/ j" i- R3 J( n a. 45.3866° bg. 45.6638° c. 45.8366° 4 ]/ C: X% t1 }& e2 M2. c 之角度值为何?1 ?% X9 N, }, \# m
a. 66.1106° b. 66.1116° c. 66.1126°3 f" h& i/ n) p6 A8 Q
3. e 之角度值为何? & y. f% p4 o% l" {+ @, u a. 60.0136° b. 60.1306° c. 60.6013°* O X* R* `; V# i% X
4. p 弧之长度为何? # V7 v3 D [+ N8 @/ K a. 36.9042 b. 36.9204 c. 36.9402 + ?8 i& E1 {( N# H2 p/ m5. ∠ABC 之角度值为何? 0 k( |1 G; s9 X2 @- S h5 P a. 51.4594° b. 51.5494° c. 51.9445°' ~9 r& P% @6 v4 J( w
6. 此图围成之面积为何?7 x: a) _& I8 j# B) b
a. 7380.6246 b. 7380.6462 c. 7380.6624
1. a 之角度值为何? c. 45.8366° * e' y, H. f$ ~' q/ A2. c 之角度值为何? a. 66.1106° $ r9 n9 ^! c' c/ m- U! O4 d
3. e 之角度值为何? c. 60.6013°, n- Z6 ?5 R; b- j6 V2 z0 i
4. p 弧之长度为何? c. 36.9402 8 D q) ?5 `$ i) r: A Q& o5. ∠ABC 之角度值为何? a. 51.4594° ' J# C/ J0 [4 o
6. 此图围成之面积为何? a. 7380.6246 + P ~2 p6 v. B3 |) h1c、2a、3c、4c、5a、6a7 G$ q' \( @ G! K, a/ [
完成任务( ?: v6 X5 c: S, y3 J3 G
A C C A A A 我用的是旧版本 没有直接标注弧长的功能 ; a' Q- K% D3 k6 X
答案是下图 & h$ _( U) E) ~- A6 o " p5 d8 }, C+ n[ 本帖最后由 shumabaolong 于 2008-3-24 19:58 编辑 ]