Question Number 11827 by uni last updated on 01/Apr/17 $$\int\mathrm{x}^{\mathrm{2}} \mathrm{dcosx}=? \\ $$ Answered by mrW1 last updated on 01/Apr/17 $$={x}^{\mathrm{2}} \mathrm{cos}\:{x}−\int\mathrm{cos}\:{xd}\left({x}^{\mathrm{2}} \right) \\ $$$$={x}^{\mathrm{2}}…
Question Number 11781 by tawa last updated on 31/Mar/17 $$\mathrm{sin}\left(\mathrm{2}\theta\right)\:+\:\mathrm{7cos}\left(\mathrm{2}\theta\right)\:=\:\mathrm{6} \\ $$$$\mathrm{find}\:\theta \\ $$ Answered by sma3l2996 last updated on 31/Mar/17 $$\mathrm{2}{sin}\left(\theta\right){cos}\left(\theta\right)+\mathrm{7}{cos}^{\mathrm{2}} \left(\theta\right)−\mathrm{7}{sin}^{\mathrm{2}} \left(\theta\right)=\mathrm{6} \\…
Question Number 142849 by liberty last updated on 06/Jun/21 Answered by bemath last updated on 06/Jun/21 Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 11759 by Joel576 last updated on 31/Mar/17 $$\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…
Question Number 77280 by A8;15: last updated on 05/Jan/20 Commented by mr W last updated on 05/Jan/20 $$?????? \\ $$$${can}\:{you}\:{understand}\:{yourself}\:{sir}? \\ $$ Commented by mathmax…
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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
Question Number 77213 by A8;15: last updated on 04/Jan/20 Commented by A8;15: last updated on 04/Jan/20 $${prove} \\ $$$$\alpha= \\ $$ Commented by A8;15: last…
Question Number 11632 by Joel576 last updated on 29/Mar/17 Answered by sandy_suhendra last updated on 29/Mar/17 Commented by sandy_suhendra last updated on 29/Mar/17 $$\mathrm{Area}\:\Delta\mathrm{AOB}\:+\:\mathrm{Area}\:\Delta\:\mathrm{BPC} \\…
Question Number 77143 by Boyka last updated on 03/Jan/20 Commented by mr W last updated on 04/Jan/20 $${Master}\:{sir}: \\ $$$${if}\:{you}\:{don}'{t}\:{understand}\:{the}\:{answer} \\ $$$${i}\:{have}\:{given}\:{in}\:{your}\:{earlier}\:{post}, \\ $$$${you}\:{can}\:{tell}\:{me}\:{what}\:{you}\:{don}'{t} \\…