【进阶级练习题29】& F. U. L: d: s% G- v% i9 L4 I
原创:Joseflin先生(台湾) 整理:SHAONX(上海) 1 M6 M V0 m6 h/ W+ F3 {* W f% i& Z* N; t
求:! m) X. J. X# m5 [ d0 h+ V# w
1. a之长度值为何?) J+ E2 x1 H9 [' x3 G) d
a. 173.2051 b. 173.2150 c. 173.2501 9 _# \- u z7 X' e& h- o2.AD之距离为何?6 P7 r9 M: H: }3 m( @5 ?
a. 312.2499 b. 312.2949 c. 312.2994- i$ u7 a) ^/ C, l
3. ∠ABC角度值为何? / b" M8 q# j8 X* f/ l' ?% c1 S a. 51.778° b. 51.787° c. 51.877°4 d( y: e3 P# r' ?
4. 蓝色区域之面积为何? 7 e# @* V; ~* S8 f" Z a. 64951.3509 b. 64951.5309 c. 64951.9053