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OpenStudy (anonymous):
i need help with angle relationships in circles? any one that can help?
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OpenStudy (anonymous):
cos@ = r1sqr + r2sqr - (c1 c2) sqr / 2 r1 r2 where r1 and r2 is radius or circles c1 and c2 centre of circle
OpenStudy (dumbcow):
what exactly? central angles always sum up to 360 inscribed angles = 1/2 the exterior arc
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