1. a 之長度為何?% t; p G( s0 u! T
(A) 60.8334 (B) 60.8343 (C) 60.8433 6 J3 P& P x0 D" i w9 s' n6 j7 G2. b 之角度值為何? , p/ C6 X6 ?( P' Z. A (A) 22.197° (B) 22.791° (C) 22.971°4 \( k. V2 g. W3 i" o
& {0 K X* q( _3 u( b, F
[ 本帖最后由 joseflin 于 2007-11-23 16:02 编辑 ]