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Question Number 113503 by Khalmohmmad last updated on 13/Sep/20 Commented by Khalmohmmad last updated on 13/Sep/20 $$\mathrm{Please}\:\mathrm{Solve} \\ $$ Terms of Service Privacy Policy Contact:…

Question Number 113488 by weltr last updated on 13/Sep/20 $${prove}\:{that} \\ $$$$\frac{{sin}\left(\mathrm{2}{a}\right){cos}\left(\mathrm{2}{a}\right)}{{cos}\left(\mathrm{4}{a}\right)}\:=\:\frac{\mathrm{1}}{\mathrm{2}}\:{tan}\left(\mathrm{4}{a}\right) \\ $$ Answered by som(math1967) last updated on 13/Sep/20 $$\mathrm{L}.\mathrm{H}.\mathrm{S}=\frac{\mathrm{2sin2}\alpha\mathrm{cos2}\alpha}{\mathrm{2cos4}\alpha} \\ $$$$=\frac{\mathrm{1}}{\mathrm{2}}×\frac{\mathrm{sin4}\alpha}{\mathrm{cos4}\alpha}=\frac{\mathrm{1}}{\mathrm{2}}\mathrm{tan4}\alpha=\mathrm{R}.\mathrm{H}.\mathrm{S} \\…

Question Number 113452 by mathdave last updated on 13/Sep/20 Answered by maths mind last updated on 13/Sep/20 $${x}={sin}\left({t}\right) \\ $$$$\Rightarrow=\int_{\mathrm{0}} ^{\frac{\pi}{\mathrm{2}}} \frac{{tcos}\left({t}\right){dt}}{{sin}\left({t}\right)+{cos}\left({t}\right)}={I} \\ $$$${J}=\int_{\mathrm{0}} ^{\frac{\pi}{\mathrm{2}}}…

Question Number 47896 by ggny last updated on 16/Nov/18 $$\mathrm{3}\frac{\mathrm{5}}{\mathrm{7}}/\mathrm{2}\frac{\mathrm{1}}{\mathrm{7}}=×/\mathrm{1}.\mathrm{5}\:\:\:\:\:\mathrm{sir}\:\mathrm{plz}\:\mathrm{help}\:\mathrm{me} \\ $$$$ \\ $$ Answered by tanmay.chaudhury50@gmail.com last updated on 16/Nov/18 $$\frac{\frac{\mathrm{26}}{\mathrm{7}}}{\frac{\mathrm{15}}{\mathrm{7}}}=\frac{{x}}{\mathrm{1}.\mathrm{5}} \\ $$$$\frac{\mathrm{26}}{\mathrm{15}}=\frac{{x}}{\mathrm{1}.\mathrm{5}} \\…

Question Number 113408 by ZiYangLee last updated on 13/Sep/20 Commented by ZiYangLee last updated on 13/Sep/20 $$\mathrm{help}.. \\ $$ Answered by Dwaipayan Shikari last updated…