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C СС22 C4R cos + 4R sin2= 4R2C2= 4R Cos/?C+ sin?2 2= 4R (1) = 4R11. Prove that r + rz + ri - r2 = 4R cos B(Mar-2018(AP), 2012: Consider rir + r-ra​

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ANSWER:

I. All POTTERIES can NEVER be METALS.



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