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Principle Of Mathematical Induction

Question

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If $space space space cosA plus sinB equals straight m comma space sinA plus cosB space equals space straight n comma$ show that $sin space left parenthesis straight A plus straight B right parenthesis space equals space fraction numerator straight m squared plus straight n squared minus 2 over denominator 2 end fraction.$

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Some More Questions From Principle of Mathematical Induction Chapter

If in two circles, arcs of the same length subtend angles 60° and 75° at the centre, find the ratio of their radii.

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