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ICSE Class 8 Answered

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Asked by janish75 | 18 Jul, 2018, 03:32: PM
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begin mathsize 16px style Given colon space straight i. space increment OPQ space is space an space equilateral space triangle. ii. space square PQRS space is space straight a space Square. To space find colon straight m angle straight x space and space straight m angle straight y Solution colon straight m angle OPQ space equals space 60 degree space space space... from space left parenthesis straight i right parenthesis straight m angle SPQ space equals space 90 degree space space..... from space left parenthesis ii right parenthesis straight m angle straight P space equals straight m angle OPQ space plus space straight m angle SPQ space space equals space 90 degree plus 60 degree equals 150 degree space space.... left parenthesis iii right parenthesis straight l space left parenthesis PQ right parenthesis space equals space straight l left parenthesis OP right parenthesis space..... space from space left parenthesis straight i right parenthesis straight l space left parenthesis PQ right parenthesis space equals space straight l left parenthesis PS right parenthesis space space..... from left parenthesis ii right parenthesis rightwards double arrow straight l left parenthesis OP right parenthesis space equals space straight l left parenthesis PS right parenthesis In space increment OPS comma straight l left parenthesis OP right parenthesis space equals space straight l left parenthesis PS right parenthesis rightwards double arrow straight m angle straight x space equals space straight m angle straight y..... left parenthesis angles space opposite space to space equal space sides right parenthesis... left parenthesis iv right parenthesis In space increment OPS comma straight m angle straight x space plus space straight m angle straight y space plus space straight m angle straight P space equals space 180 degree rightwards double arrow straight m angle straight x space plus space straight m angle straight y space space equals 180 degree space minus 150 degree space equals space 30 degree space space space..... from left parenthesis iii right parenthesis rightwards double arrow straight m angle straight x space equals space straight m angle straight y space equals 15 degree space space space space space.... from left parenthesis iv right parenthesis end style
Answered by Yasmeen Khan | 19 Jul, 2018, 10:24: AM

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