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Author: Tinku Tara

cos-ln-a-x-k-dx-

Question Number 131176 by Raxreedoroid last updated on 02/Feb/21 $$\int\frac{{cos}\left({ln}\left({a}^{{x}} \right)\right)}{\:\sqrt{{k}}}{dx}=?? \\ $$ Answered by Ar Brandon last updated on 02/Feb/21 $$\mathrm{I}=\int\frac{\mathrm{cos}\left(\mathrm{lna}^{\mathrm{x}} \right)}{\:\sqrt{\mathrm{k}}}\mathrm{dx}\:,\:\mathrm{t}=\mathrm{lna}^{\mathrm{x}} \:\Rightarrow\mathrm{dt}=\mathrm{lnadx} \\…

sin5-

Question Number 105 by mr.guddukr@gmail.com last updated on 25/Jan/15 $${sin}\mathrm{5}\theta=\:? \\ $$ Answered by mreddy last updated on 03/Dec/14 $$\mathrm{sin}\:\mathrm{2}\theta=\mathrm{2sin}\:\theta\mathrm{cos}\:\theta \\ $$$$\mathrm{cos}\:\mathrm{2}\theta=\mathrm{1}−\mathrm{2sin}^{\mathrm{2}} \theta \\ $$$$\mathrm{sin}\:\mathrm{3}\theta=\mathrm{sin}\:\left(\mathrm{2}\theta+\theta\right)=\mathrm{2sin}\:\theta\mathrm{cos}^{\mathrm{2}}…

The-perimeter-of-an-isosceles-right-angled-triangle-is-2p-Find-out-the-area-of-the-triangle-

Question Number 99 by sagarwal last updated on 25/Jan/15 $$\mathrm{The}\:\mathrm{perimeter}\:\mathrm{of}\:\mathrm{an}\:\mathrm{isosceles}\:\mathrm{right}−\mathrm{angled} \\ $$$$\mathrm{triangle}\:\mathrm{is}\:\mathrm{2}{p}.\:\mathrm{Find}\:\mathrm{out}\:\mathrm{the}\:\mathrm{area}\:\mathrm{of}\:\mathrm{the}\:\mathrm{triangle}. \\ $$ Answered by 123456 last updated on 14/Dec/14 $$\mathrm{lets}\:\Delta\mathrm{A}{BC}\:\mathrm{be}\:\mathrm{a}\:\mathrm{triangle}\:\mathrm{with}\:\mathrm{lenght}\:{a},{b},{c} \\ $$$$\mathrm{by}\:\mathrm{it}\:\mathrm{isosceles}\:\mathrm{mean}\:\mathrm{that}\:\mathrm{two}\:\mathrm{or}\:\mathrm{more}\:\mathrm{angle}\:\mathrm{and}\:\mathrm{lenght}\:\mathrm{are}\:\mathrm{equal} \\…