Question

Grape

求過程

2. (A)如圖,以M為圓心、MA=8為半徑畫圓, 亦為該圓的直徑,B、C、D三點皆在圓
ER
且AB=BC=CD=DE·若MD=8(cos(+90°),sin(6+90°))。請選出正確的選項
B | c0545, 5m ²45 / = 8 | sind, w30).
(BEHER
CE(3)
E
M
X
16/0+ 0/+ Sof= HJARTH A
sino t
KAR ST
0080=1
(A) (MA=8(cos0,sin0) BMC = 8(cos(+45°), sin (0+45°)) (C) (P) MA-MA = 8
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(P) MB.MD=0 (BD = 8( cos 0 + cos(€ +90°), sin+sin(+90°))