Question

(≧ω≦)/

為什麼sinb=sinCAD

TO CIPIT SABC , <BAC = 90° 17 AD BC BED THALA20
ENTO
2
co sin <CAD das coSC (3) COSECAD
12 Cos
sinB 5YcoSL BAD
@Sin<CAD = CD
AC
CH
@cos (= √( (0)
AC
AD
AC
3 cos <BAD = cos <C =
Ⓒ) COS<CAD =
4 sinB = Sin<CAD =
CD
Ac
19/12
A ACT-

Answer 1

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Ny-Ålesund

是在問這個嗎?
∠1 + ∠2 = 90 度