【进阶级练习题96】2 o$ X8 | _5 l
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求: ' d. n- h# [" {) s0 d" Y/ N1. BC 之长度为何?9 z9 f4 a( j5 e' U) z- B# o
a. 62.8677 b. 62.8767 c. 62.8776) \) r4 s/ V& ?6 H# s
2. a 弧之长度为何? : z- X1 C. I: e7 M6 D" J- p a. 106.7237 b. 106.7327 c. 106.77234 U- R$ T L: w+ {" i
3. ∠ADE 之角度值为何? % S1 r$ l) ^; R# h a. 54.487° b. 54.748° c. 54.874° 0 ~3 @4 ~9 f% l1 V4. f 之半径值为何?3 a8 ~: ]& J& e! r4 q. y; M# c
a. 9.9064 b. 9.9406 c. 9.96046 [/ q$ X. I9 f" O, M
5. g 之半径值为何? & d4 Y# A% A$ B7 R a. 6.9147 b. 6.9417 c. 6.9714