Category: Geometry

Question Number 180104 by mr W last updated on 07/Nov/22 Commented by mr W last updated on 07/Nov/22 $$Aliesonx-axisandBonthecurve$$$$y=x^2.Pisat(4,4).findthesmallest$$$${perimeter}\:{of}\:{triangle}\:{PAB}. \…

Question Number 180043 by mr W last updated on 06/Nov/22 Commented by CElcedricjunior last updated on 06/Nov/22 $${\mathit{d}}^{\prime }\mathit{a}\mathit{p}\mathit{r}\mathit{e}\mathit{s}\mathit{l}\mathit{e}\mathit{t}\mathit{h}\mathit{e}\mathit{o}\mathit{r}\mathit{e}\mathit{m}\mathit{e}\mathit{d}\mathit{e}\mathit{s}\mathit{s}\mathit{i}\mathit{n}\mathit{u}\mathit{s}$$$$\frac{7}{\mathit{s}\mathit{i}\mathit{n}\mathit{\alpha }}=\frac{?}{\mathit{s}\mathit{i}\mathit{n}2\mathit{\alpha }}=\frac{8}{\mathit{s}\mathit{i}\mathit{n}(\mathit{\pi }-3\mathit{\alpha })}$$$$=>\frac{7}{\mathit{s}\mathit{i}\mathit{n}\mathit{\alpha }}=\frac{?}{\mathit{s}\mathit{i}\mathit{n}2\mathit{\alpha }}=\frac{8}{\mathit{s}\mathit{i}\mathit{n}3\mathit{\alpha }}$$$$\Leftrightarrow\frac{?}{\mathrm{7}}=\mathrm{2}\boldsymbol{{cos}\alpha}=>?=\mathrm{14}\boldsymbol{{cos}\alpha}=>?^{\mathrm{2}} =\mathrm{14}^{\mathrm{2}}…

Question Number 48874 by behi83417@gmail.com last updated on 29/Nov/18 Commented by behi83417@gmail.com last updated on 29/Nov/18 $$ABC,equilateral.$$$$CD=CE=8,AD=EB=4,DE=3$$$$\Rightarrow AB=?$$ Answered by…

Question Number 179927 by Tawa11 last updated on 04/Nov/22 Commented by som(math1967) last updated on 04/Nov/22 Commented by som(math1967) last updated on 04/Nov/22 $$\:\mathrm{3}\boldsymbol{{b}} \…

Question Number 114379 by A8;15: last updated on 18/Sep/20 Commented by A8;15: last updated on 18/Sep/20 please help Answered by mr W last updated on 19/Sep/20…