llwilliams123
llwilliams123
17-07-2017
Mathematics
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HELP ME PLEASE??????
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Banabanana
Banabanana
17-07-2017
The measure of an angle formed by a two secants
drawn from a point
outside
the circle is half the the difference of the intercepted arcs, so:
[tex]\cfrac{85^o - arcBD}{2}=20^o \\ \\ 85^o-arcBD = 40^o \\ \\ arcBD = 85^o - 40^o = 45^o[/tex]
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