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OpenStudy (anonymous):
What is the length of the support AB? 7 by cos 45 degrees 7 tan 45° 7 by sin 45 degrees 7 cos 45°
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OpenStudy (anonymous):
OpenStudy (anonymous):
I really dont understand could u help
OpenStudy (jdoe0001):
use the 45-45-90 rule => http://nanharbison.com/sats/math_images/45-45-90.gif notice the ratios
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