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K.Binks
 one year ago
Find angle A if DE is equal to 66 degrees and BC is equal to 23 degrees.
K.Binks
 one year ago
Find angle A if DE is equal to 66 degrees and BC is equal to 23 degrees.

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ikram002p
 one year ago
Best ResponseYou've already chosen the best response.0dw:1438614978271:dw

K.Binks
 one year ago
Best ResponseYou've already chosen the best response.0But how do I solve for A?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0sorry, the angle DCE is 33°, CDB is 23°/2, show the triangle ACD

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the relation, DCE (external) is CDB + A

ikram002p
 one year ago
Best ResponseYou've already chosen the best response.0use this formula : AE CE=AD BD

phi
 one year ago
Best ResponseYou've already chosen the best response.0angle A is 1/2 the difference between the two intercepted arcs. in other words \[ \angle A= \frac{1}{2}( \widehat{DE} \widehat{BC})\]
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