【进阶级练习题74】 , j% w' L3 Q0 v9 \0 O; \ ! `2 I5 N/ J+ t9 w8 K( I. L+ k求:% j3 @, j" ]6 e* ]1 D
1. AD 之距离为何? ' o/ }# U. u8 k6 @0 G- Z; F* F a. 65.0078 b. 65.0780 c. 65.0870' U3 N0 B) [( r0 u: ^8 _/ T
2. ∠ABC 之角度值为何?% L% E' Y3 o* |
a. 84.129° b. 84.219° c. 84.912°' j' U f) m5 ?7 A9 ?( s& Z
3. a 弧之长度为何?! Z0 E5 D; W4 X& L3 Z- m1 X
a. 37.4181 b. 37.4818 c. 37.4881 3 b: f- J6 D+ Q5 I1 c7 l4. 此图包围的面积为何?9 U" O- A6 Q+ W+ c
a.3397.8017 b. 3397.8107 c. 3397.8710
1. AD 之距离为何? b. 65.0780 X& J. G! ?, A! m. V' n# x
" T1 j' C7 a7 p0 o& [* \
2. ∠ABC 之角度值为何? c. 84.912°; E5 n2 Q% Z3 F9 W/ F
- L# N& X& B n
3. a 弧之长度为何? b. 37.4818 / J6 W/ e1 l: a. k: e6 @* X$ r E: P( i" f
4. 此图包围的面积为何? c. 3397.8710# j! F5 p4 A: U; q% G( C5 B
! c8 @9 D0 o: S6 [, Y
1. AD 之距离为何?: A! f i) {5 x' T# A: T4 b
b. 65.0780 2 Q6 C* ~2 y- k$ K( R. ` [
2. ∠ABC 之角度值为何?3 g$ f3 w' T( q0 ^
c. 84.912°. o/ b- I( b, S2 J/ k2 c4 n
3. a 弧之长度为何? 4 p" T A9 L/ R% l Q' c b. 37.4818 : s) Y+ c) ^7 u; A4. 此图包围的面积为何?' u7 D- o( `" c' L
c. 3397.8710