【进阶级练习题74】 4 }, P3 u; |, d/ _ 0 a# L' H6 P4 A求: 3 X& W0 N9 o5 C& N, W1. AD 之距离为何?3 w ]3 [# W2 ^' S4 u, t$ j" C9 M# I
a. 65.0078 b. 65.0780 c. 65.0870& S# n" M. a9 g. Y& W* @
2. ∠ABC 之角度值为何? $ v R" h& U+ _ a. 84.129° b. 84.219° c. 84.912° " C3 q' _) Z* l: i3 w3. a 弧之长度为何? & Q/ C& v/ N% x C a. 37.4181 b. 37.4818 c. 37.4881+ Z' W6 j& H" Z! b+ O8 M6 n% E+ S8 j
4. 此图包围的面积为何?) g) A+ u% E- z- ~. C
a.3397.8017 b. 3397.8107 c. 3397.8710
1. AD 之距离为何?) Q4 x, n0 F2 y E
b. 65.0780 . x- X) V. z3 C9 `2. ∠ABC 之角度值为何? $ w5 c4 r/ R% d2 A. g$ J# R c. 84.912°0 z" m: C; h. g2 U& S
3. a 弧之长度为何? ' R& I& K# q/ J- k" S$ _# [$ d/ b, h+ z4 J b. 37.4818 / j$ c: R: ]% z% Z: M
4. 此图包围的面积为何?/ K# c7 e' b+ A' e: `, v, P. P
c. 3397.8710