Question

Lee Peng

為什麼tanB=1/2,tanr=1/3🥹求解謝謝🙏🏻

26 互動式教學講義・數學(3A)
範例 6
幾何圖形
如右圖,四邊形 ABGH,四邊形 BCFG,四邊形 CDEF 均為正方形,
#LABH=a' ZACH=B LADH=ya+B+y=_9₁²
9
FUT="DONA st: fed Larnat + 'oolmat
Won't "oolmat - 1
⇒ tan (B+r) = _ tank + tank
1-tank tanr
⇒ B=r=45°
=-K+B+ r=45°+ 45° = 40"
O
(80+
(+1)
H
climat
:: α = 45°. tank = 1 - tank = — _ tanr =
1
11².00 NAS-1) = NAD + Ⓡool Mats
++
1 - 1 x 1° ° F N N J + F L + $T = a√√ NNT +° 0 0 / NAT
txt
=== of mut tool muat 50- armat + 00 | NAT
α
A
a
B
E
BC Y D

Answer 1

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Q

就假設邊長為1就可以了（因為都是正方形）

Lee Peng

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