【进阶级练习题65】 8 W: T" x w; \8 a; J 0 e! W4 l" b& {/ v# j( [求:- J. t& O0 O+ v! v- K- M6 M
1. a 之角度值为何? . P0 {( b7 ~$ T7 U a. 45.3866° bg. 45.6638° c. 45.8366° : o' f s q/ A [+ |; \2. c 之角度值为何? % @6 f/ O0 y( F! k3 [9 W a. 66.1106° b. 66.1116° c. 66.1126° p' v0 w6 I5 C$ N& D' p- z/ F3 k3. e 之角度值为何?7 B+ [" H: ~* o" r3 {* I/ {& w
a. 60.0136° b. 60.1306° c. 60.6013° * Y& T1 J) A7 P" R& F, s' U ]4. p 弧之长度为何?, {2 D% a/ B" b K( J. h" a4 q3 W
a. 36.9042 b. 36.9204 c. 36.9402 $ j+ {' f$ U; e' t+ Z5. ∠ABC 之角度值为何? ( A. I5 v* _2 r$ V% o a. 51.4594° b. 51.5494° c. 51.9445°; p+ u% m+ f1 n- j5 f+ h8 l8 Z
6. 此图围成之面积为何? 3 |# r: {+ G& r' p3 x) }9 N `, ^3 K a. 7380.6246 b. 7380.6462 c. 7380.6624