【进阶级练习题65】 ' {5 F; K3 i; h Q' D ]7 ~5 d: r. s' J% F1 n$ H
求:# p' `5 g: v% x) [
1. a 之角度值为何?# Z; q+ m; p" S
a. 45.3866° bg. 45.6638° c. 45.8366°/ u6 d( X1 s3 L G4 O
2. c 之角度值为何?* d" t2 l" g" U& t8 j% j: [
a. 66.1106° b. 66.1116° c. 66.1126° / s8 M* b$ T; R' C3. e 之角度值为何?8 o4 S" Y+ o7 W- D% {5 C
a. 60.0136° b. 60.1306° c. 60.6013° ' X5 H( n+ k8 S6 F2 U4. p 弧之长度为何?1 C6 x, X0 Z* i, K% H
a. 36.9042 b. 36.9204 c. 36.94024 ^3 T' T/ p6 H/ ]1 V5 x
5. ∠ABC 之角度值为何? 2 i& J7 c" n+ e a. 51.4594° b. 51.5494° c. 51.9445° ( ]( `% w3 a5 w! r+ c9 x1 \8 a0 C6. 此图围成之面积为何? ! i @' t8 Z; X% B& A! A0 W a. 7380.6246 b. 7380.6462 c. 7380.6624
1. a 之角度值为何? c. 45.8366° * x. y W, A' w* z' R7 g3 c, ?3 Q2. c 之角度值为何? a. 66.1106° 5 b0 j" K8 t- r0 o9 A3. e 之角度值为何? c. 60.6013° ) f9 d0 g' F F! |1 |7 e1 x4. p 弧之长度为何? c. 36.9402' s0 O+ P7 h9 ^+ {2 p) O
5. ∠ABC 之角度值为何? a. 51.4594° " Z S) y& W2 U# A" D6. 此图围成之面积为何? a. 7380.6246 \( `- i, U( \* P& X7 h
1c、2a、3c、4c、5a、6a7 U. z0 G4 w+ c# z" b4 d1 i# w( Z# d