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यदि z(1),z(2) समीकरण az^(2)+bz+c=0 के म...

यदि `z_(1),z_(2)` समीकरण `az^(2)+bz+c=0` के मूल है जहां `a,b,c gt0,2b^(2)gt4acgtb^(2)`, तथा आर्गण्ड तल में `z_(1)` तृतीय चतुर्थांश में व `z_(2)` द्वितीय चतुर्थांश में है तो प्रदर्शित कीजिए कि `art((z_(1))/(z_(2)))=2cos^(-1)((b^(2))/(4ac))^(1//2)` होगा।

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