【进阶级练习题96】 ' ]9 ~7 C% q5 V5 b" t& D y1 ~* Q' m7 r
求: 1 @8 V; @0 j/ j( u* y, {0 r1. BC 之长度为何? 7 z6 Z' |' f/ g' B9 m6 w- _ a. 62.8677 b. 62.8767 c. 62.87768 z6 _7 ?# z7 F2 D, z( Y- f1 A
2. a 弧之长度为何?& | q7 r' M) g6 H! s" p# D( ]
a. 106.7237 b. 106.7327 c. 106.77232 Y8 p, y9 z J: V6 }% l
3. ∠ADE 之角度值为何? 7 v& ]6 c; D( l a. 54.487° b. 54.748° c. 54.874° ; j: @! |) M# l) d8 |4. f 之半径值为何?- V1 t# y; t( l b
a. 9.9064 b. 9.9406 c. 9.9604 8 }; G1 V" ~7 Y& S5 j0 B h' C9 l5. g 之半径值为何?- x7 ]7 ?2 r* S- q+ y7 J# i
a. 6.9147 b. 6.9417 c. 6.9714
练习题106答案:; w1 p. b* B; X
1. BC 之长度为何?0 K" f# V* }; z
c. 62.8776% c( g& q$ {& \) K
2. a 弧之长度为何?; h9 F) c1 x) P- J6 s, Q% x( e) Q, h5 @
b. 106.73270 Z9 X' c& N8 [3 I8 m; X7 e4 ^
3. ∠ADE 之角度值为何? : f. _, y: H. _) y' k+ Z. ^& S7 _' ~4 T b. 54.748° " }; R; T# ?% Z+ F* p/ u# V! H4 K4. f 之半径值为何? 6 _: p; }2 ^# f b. 9.9406 ' i/ s0 n6 @6 `5. g 之半径值为何?8 B! J' m4 K' @5 T$ V
c. 6.9714