Prove that: angle AXD = 1/2 (arc AD - arc Bc)

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40 marbles are equally divided among a certain number of children. If there were 2 children less, each would have received 1 more marble. Find the number of children. Soln: Let number of children be x. Then each student will get 40/x If there were 2 children less i.e x-2 then each woul ...
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P, Q, R is the midpoint of sides, AS perpendicular to BC. Prove that PQRC is cyclic quadrilateral. Soln: ...
Simplify: Soln: ...