Category: Trigonometry

Question Number 97346 by bobhans last updated on 07/Jun/20 Answered by john santu last updated on 07/Jun/20 $$1+3\sqrt[3]{2}\sqrt[3]{{\left(\sin \mathrm{xcos}\mathrm{x}\right)}^2}=2$$$$3\sqrt[3]{2}\sqrt[3]{\frac{1}{4}{\sin }^{2}2\mathrm{x}}=1$$$$\mathrm{54}\:\left(\frac{\mathrm{1}}{\mathrm{4}}\mathrm{sin}\:^{\mathrm{2}} \:\mathrm{2x}\right)\:=\:\mathrm{1}…

Question Number 162872 by amin96 last updated on 01/Jan/22 Commented by amin96 last updated on 01/Jan/22 $$\mathit{P}\mathit{R}\mathit{O}\mathit{V}\mathit{E}\mathit{T}\mathit{H}\mathit{A}\mathit{T}$$ Answered by Ar Brandon last updated…

Question Number 162776 by john_santu last updated on 01/Jan/22 $$\frac{\sin x}{1-\cos x}=\frac{1}{2}$$$$x=?$$ Answered by bobhans last updated on 01/Jan/22 $$2\sin \mathrm{x}+\cos \mathrm{x}=1$$$$\:\:\sqrt{\mathrm{5}}\:\left(\frac{\mathrm{2}}{\:\sqrt{\mathrm{5}}}\:\mathrm{sin}\:\mathrm{x}\:+\:\frac{\mathrm{1}}{\:\sqrt{\mathrm{5}}}\:\mathrm{cos}\:\mathrm{x}\right)=\:\mathrm{1} \…

Question Number 162649 by tounghoungko last updated on 31/Dec/21 $$\sin {}^{10}\left(x\right)+\cos {}^{10}\left(x\right)=\frac{11}{36}$$$$\sin {}^{12}\left(x\right)+\cos {}^{12}\left(x\right)=?$$ Answered by Ar Brandon last updated on…

Question Number 31549 by de best last updated on 10/Mar/18 $$witoutusingcalculator,simpify$$$$cos22.5°$$ Answered by $@ty@mlastupdatedon10/Mar/18$$\mathrm{cos}\:\mathrm{2}{x}=\mathrm{2cos}\:^{\mathrm{2}} {x}−\mathrm{1} \…