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OpenStudy (anonymous):
Trig Question...
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OpenStudy (anonymous):
Triangle ABC is right angled at C, and K is the midpoint of AB. Also, CK has the same length as AK and BK. Prove that cos x = (b^2-a^2)/(b^2+a^2), where x = <BKC
OpenStudy (aravindg):
could u please draw a figure first?
OpenStudy (anonymous):
Drawing...
OpenStudy (anonymous):
|dw:1335856565383:dw|
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