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Question Number 217783 by malwan last updated on 21/Mar/25 $$ \\ $$ Commented by malwan last updated on 21/Mar/25 $$ \\ $$ Commented by malwan…
Question Number 217384 by MATHEMATICSAM last updated on 12/Mar/25 $$\mathrm{Prove}\:\mathrm{that}\:\mathrm{sin351}°\:=\:−\:\sqrt{\frac{\mathrm{4}\:−\:\sqrt{\mathrm{10}\:+\:\mathrm{2}\sqrt{\mathrm{5}}}}{\mathrm{8}}\:.} \\ $$ Answered by Sutrisno last updated on 14/Mar/25 $${cos}\mathrm{18}°=\frac{\sqrt{\mathrm{10}+\mathrm{2}\sqrt{\mathrm{5}}}}{\mathrm{4}} \\ $$$${sin}\mathrm{351}°=−{sin}\mathrm{9}° \\ $$$$=−\sqrt{\frac{\mathrm{1}−{cos}\mathrm{18}°}{\mathrm{2}}} \\…
Question Number 217146 by a.lgnaoui last updated on 02/Mar/25 $$\mathrm{determiner}\:\mathrm{le}\:\mathrm{cote}\:\mathrm{du}\:\mathrm{care}\:\boldsymbol{\mathrm{ABCD}} \\ $$$$\mathrm{inscrit}\:\mathrm{dans}\:\mathrm{l}\:\mathrm{elipse}\:\left\{\left(−\mathrm{3},+\mathrm{3}\right):\left(−\mathrm{8},+\mathrm{8}\right)\right\} \\ $$ Commented by a.lgnaoui last updated on 02/Mar/25 Answered by mr W…
Question Number 216733 by josemanuelrios last updated on 17/Feb/25 $$ \\ $$$$ \\ $$$$ \\ $$$$ \\ $$$$ \\ $$$$ \\ $$$$\mathrm{Comparto}\:\mathrm{otro}\:\mathrm{reto}\:\mathrm{de}\:\mathrm{matematicas}\:\mathrm{que}\: \\ $$$$\mathrm{dice}\:\mathrm{literalmente}: \\…
Question Number 216592 by Davidtim last updated on 11/Feb/25 $${if}\:{we}\:{have}\:{the}\:{following}\:{system}: \\ $$$$\frac{{tanx}}{{tany}}={a} \\ $$$${x}\pm{y}=\alpha \\ $$$${we}\:{have}\:{the}\:{general}\:{candition}: \\ $$$$−\mathrm{1}\leqslant\left(\frac{{a}−\mathrm{1}}{{a}+\mathrm{1}}\right){sin}\alpha\leqslant\mathrm{1} \\ $$$${if}\:{you}\:{apply}\:{the}\:{general}\:{candition}\:{by} \\ $$$${the}\:{following}\:{system}\:{it}\:{does}\:{not}\:{give} \\ $$$${us}\:{the}\:{reality},\:{despite}\:{this}\:{system}\:{have} \\…
Question Number 216507 by sachipra last updated on 09/Feb/25 Commented by MathematicalUser2357 last updated on 10/Feb/25 Distance formula with no explanation Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 216454 by a.lgnaoui last updated on 08/Feb/25 $$\mathrm{Reponse}\:\mathrm{a}\:\:\mathrm{l}\:\mathrm{exercice}\:\:\mathrm{N8}: \\ $$$$\mathrm{Reponses}\:\mathrm{par}\:\mathrm{ordre}:\left(\mathrm{1},\mathrm{2},\mathrm{3},\mathrm{4},\mathrm{5},\mathrm{6}\right) \\ $$$$\boldsymbol{\mathrm{imsge}}\:\mathrm{1}\: \\ $$$$\boldsymbol{\mathrm{imsge}}\:\mathrm{2} \\ $$$$\boldsymbol{\mathrm{image}}\:\mathrm{3} \\ $$$$\boldsymbol{\mathrm{imsge}}\:\mathrm{5} \\ $$$$\boldsymbol{\mathrm{imsge}}\:\mathrm{4} \\ $$$$\boldsymbol{\mathrm{imsge}}\:\mathrm{6} \\…
Question Number 216421 by MATHEMATICSAM last updated on 07/Feb/25 $$\mathrm{If}\:{a}\mathrm{sin}\theta\:+\:{b}\mathrm{cos}\theta\:=\:{a}\mathrm{cosec}\theta\:+\:{b}\mathrm{sec}\theta\:\mathrm{then} \\ $$$$\mathrm{prove}\:\mathrm{that}\:\mathrm{each}\:\mathrm{term}\:\mathrm{is}\:\mathrm{equal}\:\mathrm{to} \\ $$$$\left({a}^{\frac{\mathrm{2}}{\mathrm{3}}} \:−\:{b}^{\frac{\mathrm{2}}{\mathrm{3}}} \right)\sqrt{{a}^{\frac{\mathrm{2}}{\mathrm{3}}} \:+\:{b}^{\frac{\mathrm{2}}{\mathrm{3}}} }. \\ $$ Answered by mr W last…
Question Number 216202 by mahdipoor last updated on 29/Jan/25 $${prove}\::\: \\ $$$${sin}\left({a}+{b}\right)={sin}\left({a}\right){cos}\left({b}\right)+{sin}\left({b}\right){cos}\left({a}\right) \\ $$ Answered by dionigi last updated on 30/Jan/25 $${e}^{{i}\:\left({a}+{b}\right)\:} =\:\mathrm{cos}\left({a}+{b}\right)\:+\:{i}\:\mathrm{sin}\left({a}+{b}\right) \\ $$$${e}^{{i}\:\left({a}+{b}\right)\:}…