Category: Trigonometry

Question Number 158173 by France last updated on 31/Oct/21 $$\mathrm{simplify}\mathrm{the}\mathrm{expression}(1+\sin \mathit{\varphi })/(5+3\tan \mathit{\varphi }-4\cos \mathit{\varphi })\mathrm{using}\mathrm{small}\mathrm{angles}\mathrm{approximation}\mathrm{up}\mathrm{to}\mathrm{the}\mathrm{term}\mathrm{containing}{\varphi }^2$$ Terms of Service Privacy Policy Contact: info@tinkutara.com

Question Number 92585 by john santu last updated on 08/May/20 $$\sin 2\mathrm{z}+5(\sin \mathrm{z}+\cos \mathrm{z})+1=0$$ Commented by john santu last updated on 08/May/20 $$1+\sin 2\mathrm{z}={(\sin \mathrm{z}+\cos \mathrm{z})}^2$$$$\Rightarrow\left(\mathrm{sin}\:\mathrm{z}+\mathrm{cos}\:\mathrm{z}\right)\left(\mathrm{sin}\:\mathrm{z}+\mathrm{cos}\:\mathrm{z}+\mathrm{5}\right)=\mathrm{0} \…

Question Number 26951 by Tinkutara last updated on 31/Dec/17 Answered by prakash jain last updated on 31/Dec/17 $$5\cos 2\theta +12\sin 2\theta =13$$$$5(1-{2\sin }^2\theta )+24\sin \theta \cos \theta =13$$$$\mathrm{10sin}^{\mathrm{2}} \theta−\mathrm{24sin}\:\theta\mathrm{cos}\:\theta+\mathrm{8}=\mathrm{0} \…

Question Number 92438 by Ar Brandon last updated on 06/May/20 $$\mathrm{find}\mathrm{the}\mathrm{domaine}\mathrm{and}\mathrm{simplify}$$$$\mathrm{the}\mathrm{function}$$$$\mathrm{f}\left(\mathrm{x}\right)=\mathrm{arcos}\left(\frac{1-{\mathrm{x}}^2}{1+{\mathrm{x}}^2}\right)$$ Commented by Joel578 last updated on…

Question Number 157935 by VIDDD last updated on 30/Oct/21 $$\mathrm{Evaluate}\mathbf{A}=\underset{\mathrm{k}=1}{\sum ^{\mathrm{n}}}\left(\tan \frac{\mathrm{k}\pi }{2\mathrm{n}}\right)$$ Terms of Service Privacy Policy Contact: info@tinkutara.com