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Category: Coordinate Geometry

Question-168948

Question Number 168948 by cortano1 last updated on 22/Apr/22 Answered by mahdipoor last updated on 22/Apr/22 $${S}\left({ABCDEF}\right)=\mathrm{28}.\mathrm{75}=\frac{\mathrm{115}}{\mathrm{4}} \\ $$$$\left\{{consider}\:{a}\:{rectangle}\:{around}\:{it}\:{and}\:\right. \\ $$$$\left.{calculate}\:{S}\right\} \\ $$$${a}={coefficient}\:{of}\:{similar}=\frac{{AE}}{{AE}}=\frac{\mathrm{1}}{\mathrm{2}} \\ $$$${S}\left({ABCDEF}\right)={a}^{\mathrm{2}}…

how-do-you-represent-the-distance-between-M-andN-is-7-

Question Number 103159 by 281981 last updated on 13/Jul/20 $$\boldsymbol{\mathrm{how}}\:\boldsymbol{\mathrm{do}}\:\boldsymbol{\mathrm{you}}\:\boldsymbol{\mathrm{represent}}\:\boldsymbol{\mathrm{the}}\:\boldsymbol{\mathrm{distance}}\:\boldsymbol{\mathrm{between}} \\ $$$$\boldsymbol{\mathrm{M}}\:{and}\boldsymbol{{N}}\:\mathrm{is}\:\mathrm{7} \\ $$ Commented by 9027201563 last updated on 13/Jul/20 $$\mathrm{from}\:\mathrm{the}\:\mathrm{distance}\:\mathrm{formuar} \\ $$$$\mathrm{distance}=\sqrt{\left(\mathrm{x}_{\mathrm{2}} −\mathrm{x}_{\mathrm{1}}…

Question-168427

Question Number 168427 by cortano1 last updated on 10/Apr/22 Commented by som(math1967) last updated on 10/Apr/22 $$\measuredangle{ABC}={x} \\ $$$$\boldsymbol{{cosx}}=\frac{\mathrm{24}}{\mathrm{64}}=\frac{\mathrm{3}}{\mathrm{8}} \\ $$$$\:\frac{{BE}}{\mathrm{2}}={AB}×{S}\boldsymbol{{in}}\left(\mathrm{270}−\mathrm{3}\boldsymbol{{x}}\right) \\ $$$$\boldsymbol{{B}}{E}=\mathrm{2}{AB}×−{Cos}\mathrm{3}{x} \\ $$$$\:=\mathrm{2}×\mathrm{64}×\left(\mathrm{3}\boldsymbol{{cosx}}−\mathrm{4}\boldsymbol{{cos}}^{\mathrm{3}}…