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Author: Tinku Tara

2-nd-part-of-Q-16214-Prove-that-r-1-s-tan-A-2-r-2-s-tan-B-2-r-3-s-tan-C-2-

Question Number 16269 by Tinkutara last updated on 20/Jun/17 $$\mathrm{2}^{\mathrm{nd}} \:\mathrm{part}\:\mathrm{of}\:\mathrm{Q}.\:\mathrm{16214}:\:\mathrm{Prove}\:\mathrm{that} \\ $$$${r}_{\mathrm{1}} \:=\:{s}\:\mathrm{tan}\:\left(\frac{{A}}{\mathrm{2}}\right),\:{r}_{\mathrm{2}} \:=\:{s}\:\mathrm{tan}\:\left(\frac{{B}}{\mathrm{2}}\right), \\ $$$${r}_{\mathrm{3}} \:=\:{s}\:\mathrm{tan}\:\left(\frac{{C}}{\mathrm{2}}\right). \\ $$ Answered by mrW1 last updated…

Question-81801

Question Number 81801 by Power last updated on 15/Feb/20 Commented by mathmax by abdo last updated on 16/Feb/20 $${changement}\:{x}^{{n}} \:={cos}^{\mathrm{2}} {t}\:{give}\:{x}\:=\left({cost}\right)^{\frac{\mathrm{2}}{{n}}} \:\Rightarrow{dx}\:=−\frac{\mathrm{2}}{{n}}{sint}\:\left({cost}\right)^{\frac{\mathrm{2}}{{n}}−\mathrm{1}} \\ $$$$\Rightarrow\int_{\mathrm{0}} ^{\mathrm{1}}…

If-log-6-30-a-log-15-24-b-evaluate-log-12-60-

Question Number 147334 by Tawa11 last updated on 19/Jul/21 $$\mathrm{If}\:\:\:\:\mathrm{log}_{\mathrm{6}} \mathrm{30}\:\:\:=\:\:\:\mathrm{a},\:\:\:\:\:\:\:\:\:\mathrm{log}_{\mathrm{15}} \mathrm{24}\:\:\:=\:\:\:\mathrm{b},\:\:\:\:\:\:\:\:\:\:\:\mathrm{evaluate}:\:\:\:\mathrm{log}_{\mathrm{12}} \mathrm{60} \\ $$ Commented by otchereabdullai@gmail.com last updated on 20/Jul/21 $$\mathrm{nice}! \\ $$…

Question-81786

Question Number 81786 by M±th+et£s last updated on 15/Feb/20 Commented by M±th+et£s last updated on 16/Feb/20 $${no}\:{its}\:{right}\:{no}\:{problem}\:{with}\:{tbe}\:{ans} \\ $$$${but}\:{i}\:{need}\:{to}\:{now}\:{how}\:{you}\:{get}\:\left({x},{y},{z}\right)=\left(\mathrm{1},\mathrm{1},\mathrm{1}\right) \\ $$ Commented by john santu…