【进阶级练习题99】% _$ F Q- D+ A' i: Y
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求: 3 k: ]( F+ F$ S% ^1. AB 之距离为何?. L1 w6 c) f( ~1 p: j' }" R: e' }0 R
a. 75.9945 b. 75.9495 c. 75.4995 : \2 L+ S0 |5 `7 z( \2. ∠ABC 之角度值为何?& e' I- H9 ~- J2 g/ K' W1 c4 `' h9 p# D" z
a. 66.1379° b. 66.3179° c. 66.3719° ( [ S, ^. n& M. ?2 J& k6 h3. 此图围成之面积为何?8 z: }2 V% O; E
a. 3741.6436 b. 3741.4636 c. 3741.34662 Z$ F& W1 ]7 [5 ^