【进阶级练习题74】 " K7 l; t6 T" _& v$ X8 |3 a7 @- D$ I# l5 m G, n2 Q
求:6 ~+ e4 a9 \# _1 v
1. AD 之距离为何? F; B% T! c% t9 e7 I$ _) U" ?
a. 65.0078 b. 65.0780 c. 65.0870) O A4 j. T4 M1 e+ R1 H' P9 t
2. ∠ABC 之角度值为何?/ l( q. C8 c W' C; u) f9 t$ e/ r
a. 84.129° b. 84.219° c. 84.912°' P2 R0 Q9 X9 y" Z
3. a 弧之长度为何?! s/ v& S1 ]( h( g
a. 37.4181 b. 37.4818 c. 37.4881 0 r p4 d2 Q, \4. 此图包围的面积为何? 3 ^- a+ K5 I& e" K a.3397.8017 b. 3397.8107 c. 3397.8710
1. AD 之距离为何? b. 65.0780 ! W3 d' w) U0 t$ m! e7 ~# x) C p* w( U6 R# c
2. ∠ABC 之角度值为何? c. 84.912° ) S" ~" J. e- x1 p6 |* H/ L 7 U8 C& Q% S, w X8 J3. a 弧之长度为何? b. 37.4818 " g- A* F3 W! p
' p! k. Q5 N. i& H- K0 `% B6 N4. 此图包围的面积为何? c. 3397.8710% Z" P* ^$ n, W: S7 |$ E
1 k' s: ^& J" S( _0 O! F# @2 s% x