Answer one of these three to continue. Find the missing angle:
Door 1
Door 2
Door 3
L
ABC
: L
A= 90
,
L
B= 30
, L
C =?
L
XYZ
: L
X= 35
,
L
Y= 30
, L
Z =?
L
ABC
: L
A= 45
,
L
B= 45
, L
C =?
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