1. AD 之距离为何? 3 N% U2 O, [. y2 v b. 65.0780 5 J5 _; ^& W$ o, b6 F. Y2 e( N2. ∠ABC 之角度值为何?# h. {' L) K; Q5 V8 O5 L: @" }0 L
c. 84.912°" P1 x8 U5 s' b! j
3. a 弧之长度为何? 6 m/ Q: E, m ?- _: K b. 37.4818 9 z* n# ~4 t; e: w5 f
4. 此图包围的面积为何? w" a. K, n0 }" r' @
c. 3397.8710
1. AD 之距离为何? b. 65.0780 ; A: q5 s( i; E# j; I8 q, v ( c0 c! g# B6 Y& |2. ∠ABC 之角度值为何? c. 84.912° # r% J; J+ a9 b3 t6 _( Q4 W. h2 B- d 2 W+ U2 f) w7 Y' ^, s4 }3. a 弧之长度为何? b. 37.4818 ' p# X- u, @0 q, H
" C: R( I: R( i/ A
4. 此图包围的面积为何? c. 3397.87102 k% W; M! I" E