【进阶级练习题29】 ( s2 N0 ^7 Y0 U1 D, f原创:Joseflin先生(台湾) 整理:SHAONX(上海)* H' q( Y8 O& V" K8 ^
3 Z$ M% Y& D6 R5 R: V
求:! V' N& N9 b( p+ z5 R
1. a之长度值为何? 4 V! c/ b* v: m a. 173.2051 b. 173.2150 c. 173.25017 m, a9 D0 [' x+ U* C
2.AD之距离为何? . A5 Z. J! Y: f y) R- x7 z a. 312.2499 b. 312.2949 c. 312.29949 A8 t: a ~2 T
3. ∠ABC角度值为何?0 p9 |( U# ?( D' O; p
a. 51.778° b. 51.787° c. 51.877° ! q4 H- H9 p6 h* G _: e$ O4. 蓝色区域之面积为何?: f# j1 O: V6 M0 ~
a. 64951.3509 b. 64951.5309 c. 64951.9053