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OpenStudy (anonymous):
For the triangle shown, find the length AD.
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OpenStudy (anonymous):
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OpenStudy (agent0smith):
Find BCD first: sinB/12 = sinBCD/12 ... or just notice it's isosceles, so BCD is 25 degrees. That makes BCA 50 degrees. Now you can find angle A, and use the sine rule to find DA.
OpenStudy (agent0smith):
Or find angle BDC, since 25+25+BDC = 180. Then find angle A.
OpenStudy (anonymous):
Alright. :) Thanks so much!
OpenStudy (agent0smith):
No prob :)
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