求:
3 H0 @) q* y1 V. F- V+ e0 K; \1. A,B之距离为何?$ Q: Q" k. Z- ^. J$ u' U: B0 X
a. 81.4245 b. 81.4425 c.81.4542 w$ h% R U5 ]9 u
2.,C之弧长为何?0 }+ [/ u/ E Z7 U. H( h
a.62.135 b. 62.315 c. 62.5139 ^# A W1 R7 c& ?" f
3., D之弧长为何?6 |* n% c" E5 l0 H* o- s) W# h
a. 40.2020 b. 40.2002 c. 40.0202- J' y# E* z5 \! p' Z# P0 |
4. <BAE 之角度值为何?
; I+ M; I; y; O2 p/ ? a. 55.183° b. 55.813° c.55.318° ' G" b9 F2 \( L! n
5.外围之面积为何?
) B6 J, @! V: @- r/ q% g2 X* Z a. 2417.8099 b. 2417.8909 c. 417.9809: S; B* X8 \1 T2 G+ F- P O
说明一下,画C弧时,辅助圆与43度斜线有2个交点,用上面一个
3 e/ C8 X4 u1 H+ } |