Category: Trigonometry

Question Number 210677 by Safojon last updated on 16/Aug/24 Answered by BHOOPENDRA last updated on 16/Aug/24 $$\theta =\frac{k\pi }{7},7\theta =k\pi (wherek=1,2,3,4\dots .n)$$$$7\theta =\pi (k=1)$$$$4\theta +3\theta =\pi$$$$tg4\theta =-tg\left(3\theta \right)lettg=t$$$$\Rightarrow\:\frac{\mathrm{4}{t}−\mathrm{4}{t}^{\mathrm{3}}…

Question Number 209960 by a.lgnaoui last updated on 27/Jul/24 $$\mathrm{Determiner}\mathrm{Aire}\left(\mathbf{ABH}\right)$$$$\mathrm{AH}\mathrm{\perp }\mathrm{CE}$$ Commented by a.lgnaoui last updated on 27/Jul/24 Answered by mr W…

Question Number 209880 by mnjuly1970 last updated on 24/Jul/24 Answered by mahdipoor last updated on 25/Jul/24 $$get:a=cteandA,B,Cisvariable$$$$f(A,B,C)=\frac{\sqrt{cosA}}{a}+\frac{\sqrt{cosB}}{b}+\frac{\sqrt{cosC}}{c}=$$$$\frac{1}{a}(\sqrt{cosA}+sinA(\frac{\sqrt{cosB}}{sinB}+\frac{\sqrt{cosC}}{sinC}))$$$$g(A,B,C)=A+B+C=180$$$$\Rightarrow\frac{\partial{f}}{\partial{x}_{{i}}…

Question Number 209822 by SonGoku last updated on 22/Jul/24 $$\mathrm{A}\mathrm{ramp}\mathrm{is}\mathrm{supported}\mathrm{by}\mathrm{six}\mathrm{pillars}\mathrm{and}\mathrm{the}\mathrm{talleste}$$$$\mathrm{on}\mathrm{measures}6\mathrm{meters}.\mathrm{The}\mathrm{distance}\mathrm{between}\mathrm{eachi}$$$$\mathrm{pllar}\mathrm{is}5\mathrm{meters}.\mathrm{What}\mathrm{will}\mathrm{be}\mathrm{the}\mathrm{height}\mathrm{of}\mathrm{the}$$$$\mathrm{third}\mathrm{pillar}?$$ Commented by mr W last updated on…

Question Number 209639 by SonGoku last updated on 17/Jul/24 Commented by SonGoku last updated on 17/Jul/24 $$\mathrm{In}\mathrm{the}\mathrm{figure},\mathrm{DC}//\mathrm{FG}\mathrm{is}\mathrm{the}\mathrm{width}\mathrm{of}\mathrm{a}\mathrm{river}.$$$$\mathrm{How}\mathrm{wideis}\mathrm{this}\mathrm{river}?$$$$(\mathrm{How}\mathrm{do}\mathrm{I}\mathrm{solve}\mathrm{it}?)$$ Answered by…