Question

晨

求救d選項 為什麼9-6

10. cos B = 2
(0) 13
(A) CE=CD
tan B
(E) CF=
⇒sin =
(62)
(C) AC=AE+CE=
GESET
BAN
=
CD
tan a
6/3/2
3
tanB = 3 t
13 2 xniz = v (CI)
1 (D) tana - AB - CD 9-6
AC
10
= 4 (B) BE
(B) BE =
9
SHPU (AS-x) M13
=
AB - 9 = 3√/13
sin B3
sin ß34 (20)
√13
AB CD 9
+
tan tan 3
2
3
10
= +
63/2
=
HAS DE
AGRATELAINA,
2kx
10會下
6
= 20
3. (x-Yuriz (7.) aiz
QiE
S
10

B
LAEB=
試選出正 9
D
b
By Bin
n
AE 4C
a
F