Mathematics
Senior High
Resolved
求解這一題謝謝
3. 08. BEC-90°, AB BC CD=2:3:1, LAEB = a,
ZCED=ẞ,
tan a tanẞ=
(進階觀念補充:單位圓與三角比,請配合「主題範例」)
圈: 10
TO.
S
DELA
B
C
G
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