Hugo1111
Hugo1111
17-10-2017
Mathematics
contestada
circle theorem - easy work
Respuesta :
ejelonubenedict
ejelonubenedict
17-10-2017
angle in a semi circle is 90°
<a = 180-90-<b = 90-28 = 62°
opposite angles of a cyclic quadrilateral sums up to 180°
<b + <a = 180
<b = 180-62
<b = 118°
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