【进阶级练习题29】% T* ^/ i: g4 D M5 a' l& i
原创:Joseflin先生(台湾) 整理:SHAONX(上海) ; j* W9 {# q4 P& o 5 J0 u& t! U- R( M2 a求: , n+ r( K5 m" ?1. a之长度值为何?+ D" m3 K6 u. n
a. 173.2051 b. 173.2150 c. 173.25017 s: T. _/ Y8 z" f
2.AD之距离为何?! |. ^+ Y( \( f" v
a. 312.2499 b. 312.2949 c. 312.2994 5 e( ]! j+ \4 K5 V, i V3. ∠ABC角度值为何?& |- h W1 o& @
a. 51.778° b. 51.787° c. 51.877°0 s1 p9 y4 e* n) y6 z' s
4. 蓝色区域之面积为何?1 \/ ]0 u2 o6 O; I
a. 64951.3509 b. 64951.5309 c. 64951.9053