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OpenStudy (anonymous):
A + B + C = 180 degrees(pi radians) & sin(A+C/2)=ksin(C/2) then, tan(A/2)tan(B/2)=?
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OpenStudy (anonymous):
is there a picture?
OpenStudy (anonymous):
nope
OpenStudy (primeralph):
|dw:1371795502184:dw|
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