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Let veca , vecb , and vecc be t...

Let `veca , vecb , and vecc` be three non-coplanar unit vectors such that the angle between every pair of them is pi/3 ​ . If veca × vecb + vecb × vecc =p veca +q vecb +r vecc , where p,q and r are scalars, then the value of p 2 +2q 2 +r 2 /q2 ​ is

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