Category: Coordinate Geometry

Question Number 196304 by cortano12 last updated on 22/Aug/23 Answered by a.lgnaoui last updated on 24/Aug/23 $$\mathbf{S}=\mathrm{shaded}\mathrm{Area}$$$$\mathbf{S}1=\mathrm{Arc}\left(\mathrm{AMC}\right)\mathbf{S}2=\mathrm{Arc}\left(\mathrm{OBD}\right)$$$$\mathbf{S}=\mathbf{S}\left(\mathbf{ABCD}\right)-\mathbf{S}1+\mathbf{S}2$$$$\bullet \mathbf{Calcul}\mathbf{de}\mathbf{S}\left(\mathrm{ABCD}\right)$$$$\:\:\mathrm{OBsin}\:\mathrm{30}=\mathrm{OAsin}\:\mathrm{45}\Rightarrow\:\:\boldsymbol{\mathrm{OA}}=\mathrm{5}\sqrt{\mathrm{2}}\:…

Question Number 194821 by sniper237 last updated on 16/Jul/23 $$Mainsidepoinin\mathrm{\Delta }ABC.$$$$M=bar\{(A,area\left(MBC\right)),(B,area\left(MAC\right)),(C,area\left(MAB\right))\}$$ Commented by mr W last updated on 16/Jul/23 $$whatdomeanwith(A,area\left(MBC\right))?$$$${what}\:{do}\:{mean}\:{with}\:{bar}\:\left\{{X},\:{Y},\:{Z}\right\}?…

Question Number 194131 by cortano12 last updated on 28/Jun/23 Commented by BaliramKumar last updated on 28/Jun/23 $$25$$ Answered by MM42 last updated on…

Question Number 193235 by mathlove last updated on 08/Jun/23 Answered by a.lgnaoui last updated on 08/Jun/23 $$\mathbf{T}\mathrm{otale}\mathrm{Area}=22+\mathrm{A}(\mathrm{A}=\mathbf{xy})$$$$22+\mathbf{xy}=6\mathbf{x}+(8-\mathbf{x})\mathbf{y}$$$$2\mathbf{xy}=8\mathbf{y}+6\mathbf{x}-22$$$$$$$$\boldsymbol{\mathrm{xy}}=\mathrm{4}\boldsymbol{\mathrm{y}}+\mathrm{3}\boldsymbol{\mathrm{x}}−\mathrm{11}\:\:\:\left(\mathrm{1}\right)…

Question Number 65022 by ajfour last updated on 24/Jul/19 Commented by MJS last updated on 24/Jul/19 $$\mathrm{I}\mathrm{used}\mathrm{a}\mathrm{calculator}.{\mathrm{I}}^{\prime }\mathrm{ve}\mathrm{got}\mathrm{an}\mathrm{old}\mathrm{TI}-89$$$$\mathrm{you}\mathrm{can}\mathrm{use}\mathrm{any}\mathrm{calculator}\mathrm{which}\mathrm{is}\mathrm{able}\mathrm{to}$$$$\mathrm{approximately}\mathrm{solve}\mathrm{equations}\mathrm{and}\mathrm{integrals}$$$$\mathrm{select}\mathrm{a}\mathrm{value}\mathrm{for}r$$$$\mathrm{calculate}\:{P},\:{Q}\:\mathrm{and}\:\mathrm{the}\:\mathrm{integrals}…