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Category: Geometry

A-quadrilateral-with-consecutive-sides-of-lenght-7-15-15-and-d-is-inscribed-in-a-circle-with-its-diameter-d-Find-the-radius-of-circle-

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Question Number 11759 by Joel576 last updated on 31/Mar/17 $$\mathrm{A}\:\mathrm{quadrilateral}\:\mathrm{with}\:\mathrm{consecutive}\:\mathrm{sides}\:\mathrm{of}\:\mathrm{lenght}\:\mathrm{7},\:\mathrm{15},\:\mathrm{15},\:\mathrm{and}\:{d} \\ $$$$\mathrm{is}\:\mathrm{inscribed}\:\mathrm{in}\:\mathrm{a}\:\mathrm{circle}\:\mathrm{with}\:\mathrm{its}\:\mathrm{diameter}\:{d}. \\ $$$$\mathrm{Find}\:\mathrm{the}\:\mathrm{radius}\:\mathrm{of}\:\mathrm{circle} \\ $$ Answered by ajfour last updated on 31/Mar/17 Commented by…

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Metal-pellets-of-mass-0-1-kg-are-fired-into-an-iron-plate-of-large-mass-m-and-specific-heat-capacity-c-at-a-temperature-of-15-C-25-of-the-kinetic-energy-of-the-pellets-is-converted-thermal-energy-a

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Question Number 11740 by tawa last updated on 30/Mar/17 $$\mathrm{Metal}\:\mathrm{pellets}\:\mathrm{of}\:\mathrm{mass}\:\mathrm{0}.\mathrm{1}\:\mathrm{kg}\:\mathrm{are}\:\mathrm{fired}\:\mathrm{into}\:\mathrm{an}\:\mathrm{iron}\:\mathrm{plate}\:\mathrm{of}\:\mathrm{large}\:\mathrm{mass}\:\mathrm{m} \\ $$$$\mathrm{and}\:\mathrm{specific}\:\mathrm{heat}\:\mathrm{capacity}\:\mathrm{c}\:\mathrm{at}\:\mathrm{a}\:\mathrm{temperature}\:\mathrm{of}\:\mathrm{15}°\mathrm{C}\:.\:\mathrm{25\%}\:\mathrm{of}\:\mathrm{the}\:\mathrm{kinetic} \\ $$$$\mathrm{energy}\:\mathrm{of}\:\mathrm{the}\:\mathrm{pellets}\:\mathrm{is}\:\mathrm{converted}\:\mathrm{thermal}\:\mathrm{energy}\:\mathrm{and}\:\mathrm{the}\:\mathrm{plate}\:\mathrm{temperature} \\ $$$$\mathrm{rises}\:\mathrm{to}\:\mathrm{16}°\mathrm{C}.\:\mathrm{The}\:\mathrm{average}\:\mathrm{speed}\:\mathrm{of}\:\mathrm{the}\:\mathrm{pellets}\:\mathrm{before}\:\mathrm{hitting}\:\mathrm{the}\:\mathrm{plate}\:\mathrm{was}\:? \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com

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Question-77143

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Question Number 77143 by Boyka last updated on 03/Jan/20 Commented by mr W last updated on 04/Jan/20 $${Master}\:{sir}: \\ $$$${if}\:{you}\:{don}'{t}\:{understand}\:{the}\:{answer} \\ $$$${i}\:{have}\:{given}\:{in}\:{your}\:{earlier}\:{post}, \\ $$$${you}\:{can}\:{tell}\:{me}\:{what}\:{you}\:{don}'{t} \\…

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please-how-can-demonstred-sin-2x-cos-2x-2sin-2x-

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Question Number 11594 by JAZAR last updated on 28/Mar/17 $${please}\:{how}\:{can}\:{demonstred}\: \\ $$$${sin}\left(\mathrm{2}{x}\underset{} {\right)}/{cos}\left(\mathrm{2}{x}\right)=\mathrm{2}{sin}\left(\mathrm{2}{x}\right) \\ $$ Answered by mrW1 last updated on 28/Mar/17 $${that}'{s}\:{not}\:{true}! \\ $$$$\mathrm{sin}\:\left(\mathrm{2}{x}\right)/\mathrm{cos}\:\left(\mathrm{2}{x}\right)=\mathrm{tan}\:\left(\mathrm{2}{x}\right)\neq\mathrm{2sin}\:\left(\mathrm{2}{x}\right)…

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