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PT and PS are the two tangents of the circle C(O,R) ,and PO is equal to the diameter of the circle . To Proof: PTS is a equilateral triangle.
The table shows the daily expenditure on grocery of 25 households in a locality. Find the modal daily expenditure on grocery by a suitable method. Daily Expenditure (in Rs.) 100-150 150-200 200-250 250-300 300-350 No of households 4 5 12 2 2