Category: Geometry

Question Number 109948 by mnjuly1970 last updated on 26/Aug/20 Answered by 1549442205PVT last updated on 26/Aug/20 $$\mathrm{acosA}=\mathrm{a}.\frac{\mathrm{b}^{\mathrm{2}} +\mathrm{c}^{\mathrm{2}} −\mathrm{a}^{\mathrm{2}} }{\mathrm{2bc}}=\frac{\mathrm{a}^{\mathrm{2}} \left(\mathrm{b}^{\mathrm{2}} +\mathrm{c}^{\mathrm{2}} −\mathrm{a}^{\mathrm{2}} \right)}{\mathrm{2abc}}. \…

Question Number 44395 by ajfour last updated on 28/Sep/18 Commented by ajfour last updated on 28/Sep/18 $$Findradiusofthegreencircle,$$$$intermsofRandr.$$ Commented by ajfour last…

Question Number 44365 by ajfour last updated on 27/Sep/18 Commented by ajfour last updated on 27/Sep/18 $$Findareaof△ABCintermsof$$$$\alpha ,\beta ,andR.$$ Answered by tanmay.chaudhury50@gmail.com last…

Question Number 109674 by I want to learn more last updated on 24/Aug/20 $$\mathrm{Find}\mathrm{the}\mathrm{area}\mathrm{of}\mathrm{the}\mathrm{region}\mathrm{enclose}\mathrm{by}\mathrm{the}\mathrm{curve}\mathrm{y}=1-{\mathrm{x}}^2,$$$$\mathrm{and}\mathrm{the}\mathrm{line}\mathrm{y}=1+3\mathrm{x},\mathrm{x}=1.$$ Answered by bobhans last updated on…

Question Number 175188 by ajfour last updated on 22/Aug/22 Answered by cherokeesay last updated on 22/Aug/22 $$\frac{AD}{2}=1=OA=OC=AC=PC$$$$\frac{AB}{AC}=\frac{PQ}{PC}\iff \frac{AB}{1}=\frac{PQ}{1}=sin\left(30°\right)=\frac{1}{2}\iff$$$$AB=PQ=\frac{1}{2}$$$$$$…