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OpenStudy (anonymous):
Calling all pros
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OpenStudy (anonymous):
OpenStudy (anonymous):
OpenStudy (anonymous):
ab is all of the above - the other i already answered.
OpenStudy (nottim):
1. Use trig identities, no?
OpenStudy (anonymous):
the first one is 10 idk about the second!
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OpenStudy (anonymous):
use 30.60.90 special rules to know that 2x = 2*5 = 10
OpenStudy (anonymous):
For the second one, what are the definitions? Is it an altitude?
OpenStudy (anonymous):
Is it a median? Is it a perpendicular bisector?
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