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Author: Tinku Tara

show-that-1-3sin-2-xcos-2-x-5-8-3-8-cos4x-

Question Number 76012 by mathocean1 last updated on 22/Dec/19 $$\mathrm{show}\:\mathrm{that}\: \\ $$$$\mathrm{1}−\mathrm{3sin}^{\mathrm{2}} {x}\mathrm{cos}^{\mathrm{2}} {x}=\frac{\mathrm{5}}{\mathrm{8}}+\frac{\mathrm{3}}{\mathrm{8}}\boldsymbol{\mathrm{cos}}\mathrm{4}\boldsymbol{{x}} \\ $$ Answered by benjo last updated on 22/Dec/19 $$\mathrm{1}−\mathrm{3}/\mathrm{4}\left({sin}^{\mathrm{2}} \mathrm{2}{x}\right)=…

Question-76013

Question Number 76013 by vishalbhardwaj last updated on 22/Dec/19 Answered by som(math1967) last updated on 22/Dec/19 $$\left({y}−\mathrm{4}\right)^{\mathrm{2}} =\mathrm{4}.\mathrm{3}\left({x}−\mathrm{9}\right) \\ $$$$\therefore{Vertex}\:\left(\mathrm{9},\mathrm{4}\right)\:\:{focus}\left(\mathrm{3}+\mathrm{9}\:,\mathrm{4}\right) \\ $$$$\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\left(\:\:\mathrm{12},\mathrm{4}\right) \\ $$$${equation}\:{of}\:{directrix}\:{x}+\mathrm{3}=\mathrm{9} \\…

aman-walks-600m-at-a-bearing-of-45-0-then-500m-at-a-bearing-90-0-then-300m-at-bearing-of-135-0-then-400m-at-a-bearing-of-225-0-find-the-resultant-displacement-which-the-man-has-made-

Question Number 10475 by ketto last updated on 13/Feb/17 $${aman}\:{walks}\:\mathrm{600}{m}\:{at}\:{a}\:{bearing}\:{of}\: \\ $$$$\mathrm{45}^{\mathrm{0}\:} {then}\:\mathrm{500}{m}\:{at}\:{a}\:{bearing}\:\mathrm{90}^{\mathrm{0}} \: \\ $$$${then}\:\mathrm{300}{m}\:{at}\:{bearing}\:{of}\:\mathrm{135}^{\mathrm{0}\:} \: \\ $$$${then}\:\mathrm{400}{m}\:{at}\:{a}\:{bearing}\:{of}\:\mathrm{225}^{\mathrm{0}} \\ $$$$.{find}\:{the}\:{resultant}\:{displacement} \\ $$$${which}\:{the}\:{man}\:{has}\:{made} \\ $$…

Just-so-you-all-know-I-had-to-make-a-new-username-I-am-FilupSmith-

Question Number 10474 by FilupS last updated on 13/Feb/17 $$\mathrm{Just}\:\mathrm{so}\:\mathrm{you}\:\mathrm{all}\:\mathrm{know},\:\mathrm{I}\:\mathrm{had}\:\mathrm{to}\:\mathrm{make} \\ $$$$\mathrm{a}\:\mathrm{new}\:\mathrm{username}.\:\mathrm{I}\:\mathrm{am}\:\mathrm{FilupSmith} \\ $$ Commented by sandy_suhendra last updated on 13/Feb/17 $$\mathrm{ok}\:\mathrm{Filup} \\ $$ Terms…