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It-is-requested-to-all-who-post-question-pls-1-post-physics-question-with-diagram-2-pls-post-geometry-co-ordinate-geometry-queztions-with-diagram-as-mentioned-in-source-3-pls-post-question-in-det

Question Number 57953 by tanmay.chaudhury50@gmail.com last updated on 15/Apr/19 $${It}\:{is}\:{requested}\:{to}\:{all}\:{who}\:{post}\:{question}…{pls} \\ $$$$ \\ $$$$\left.\mathrm{1}\right){post}\:{physics}\:{question}\:{with}\:{diagram}. \\ $$$$\left.\mathrm{2}\right){pls}\:{post}\:{geometry}/{co}\:{ordinate}\:{geometry}\:{queztions} \\ $$$${with}\:{diagram}\:{as}\:{mentioned}\:{in}\:{source}. \\ $$$$\left.\mathrm{3}\right){pls}\:{post}\:{question}\:{in}\:{details}\:{as}\:{mentioned} \\ $$$$\:{in}\:{the}\:{source}. \\ $$$$\left.\mathrm{4}\right){pls}\:{post}\:{question}\:{along}\:{with}\:{the}\:{answer}\:{not} \\…

sinh-1-1-sinh-1-1-2-2-sinh-1-1-3-2-sinh-1-1-4-2-

Question Number 123460 by Dwaipayan Shikari last updated on 25/Nov/20 $${sinh}^{−\mathrm{1}} \left(\mathrm{1}\right)+{sinh}^{−\mathrm{1}} \left(\frac{\mathrm{1}}{\mathrm{2}^{\mathrm{2}} }\right)+{sinh}^{−\mathrm{1}} \left(\frac{\mathrm{1}}{\mathrm{3}^{\mathrm{2}} }\right)+{sinh}^{−\mathrm{1}} \left(\frac{\mathrm{1}}{\mathrm{4}^{\mathrm{2}} }\right)+…. \\ $$$$ \\ $$ Commented by Dwaipayan…

If-180-show-that-cos-2-cos-2-cos-2-4-cos-4-cos-4-cos-4-

Question Number 57873 by 786786AM last updated on 13/Apr/19 $$\mathrm{If}\:\alpha\:+\:\beta+\:\gamma\:=\mathrm{180}°,\:\mathrm{show}\:\mathrm{that}\:\mathrm{cos}\:\frac{\alpha}{\mathrm{2}}\:+\:\mathrm{cos}\:\frac{\beta}{\mathrm{2}}+\:\mathrm{cos}\:\frac{\gamma}{\mathrm{2}}\:=\:\mathrm{4}\:\mathrm{cos}\:\frac{\beta\:+\:\gamma}{\mathrm{4}}\:\:\mathrm{cos}\:\frac{\gamma\:+\:\alpha}{\mathrm{4}}\:\mathrm{cos}\:\frac{\alpha\:+\:\beta}{\mathrm{4}}. \\ $$ Commented by tanmay.chaudhury50@gmail.com last updated on 13/Apr/19 $${recheck}\:{the}\:{question}…{pls} \\ $$ Answered by math1967…