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how can SnCl2, a reducing agent???.. it must be oxidising agent..what u think... ...
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in ΔABC (a-b)(s-c) = (b-c)(s-a), then r1,r2,r3 are in (a) AP (b) GP (c) HP (d) none ...
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if in a triangle ABC ,the line joinning circumcentre & incentre is parallel to BC then cosB + cosC = ???...(numerical constant)..... ...
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if in ΔABC, A=1200, b-c = 3 3 & area of ΔABC = 9 3 /2, a,b,c are sides of ΔABC. then a = ??.. ...