coolkiz
coolkiz
15-03-2018
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contestada
How do I solve this question?
Respuesta :
budwilkins
budwilkins
19-03-2018
the arc opposite the 45° is 180 - 45 because the top line is a tangent
so 180-45=135
now subtract outer arc from inner arc:
135-45 = 90°
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