Category: Trigonometry

Question Number 108690 by 150505R last updated on 18/Aug/20 Terms of Service Privacy Policy Contact: info@tinkutara.com

Question Number 108644 by bemath last updated on 18/Aug/20 $$\frac{bemath}{★}$$$$findthevalueof$$$$\sin \left(\frac{\pi }{9}\right)\sin \left(\frac{2\pi }{9}\right)\sin \left(\frac{3\pi }{9}\right)\sin \left(\frac{4\pi }{9}\right)?$$ Commented by bemath last updated on 18/Aug/20 $${great}\:{answer}\:{all}\:{master} \…

Question Number 108463 by Sunnatilla last updated on 17/Aug/20 $$arcsin\left(sin10\right)$$ Terms of Service Privacy Policy Contact: info@tinkutara.com

Question Number 173893 by azadsir last updated on 20/Jul/22 $$\mathrm{if}\int \left(\mathrm{x}\right)=\mathrm{sinx}\mathrm{than}\mathrm{prove}\mathrm{that},$$$$\{\int {\left(\mathrm{x}\right)}^4\}+{\{\int \left(\mathrm{x}\right)\}}^2=1$$ Commented by MJS_new last updated on 20/Jul/22 $$\int\:\mathrm{is}\:\mathrm{the}\:\mathrm{integral}\:\mathrm{sign}… \…

Question Number 173888 by azadsir last updated on 20/Jul/22 $$\mathrm{Prove}\mathrm{that},\frac{13\mathrm{x}}{{\mathrm{x}}^2-\sqrt{13\mathrm{x}}+1}=\sqrt{13}\mathrm{if},\mathrm{x}=\sqrt{13}+2\sqrt{3}$$ Answered by a.lgnaoui last updated on 20/Jul/22 $$$$$$\frac{\mathrm{13}{x}}{\left({x}^{\mathrm{2}} −\sqrt{\mathrm{13}}{x}+\mathrm{1}\right)}=\frac{\mathrm{13}{x}}{\:\sqrt{\mathrm{13}}{x}}\Rightarrow{x}^{\mathrm{2}} −\sqrt{\mathrm{13}}{x}+\mathrm{1}=\sqrt{\mathrm{13}}{x}…