Category: Trigonometry

Question Number 89079 by john santu last updated on 15/Apr/20 $$(\cos 4x+1)(\cos 2x+1)(\cos x+1)=\frac{1}{8}$$$$0⩽x⩽2\pi$$ Answered by TANMAY PANACEA. last updated on 15/Apr/20 $$\mathrm{2}{cos}^{\mathrm{2}} \mathrm{2}{x}.\mathrm{2}{cos}^{\mathrm{2}}…

Question Number 154440 by ArielVyny last updated on 18/Sep/21 $$arcsec(sec+2)=??$$ Terms of Service Privacy Policy Contact: info@tinkutara.com

Question Number 154434 by oustmuchiya@gmail.com last updated on 18/Sep/21 Answered by mr W last updated on 18/Sep/21 $$\frac{BD}{AB}=\frac{AB}{BC}$$$$\Rightarrow BD=\frac{{AB}^2}{BC}=\frac{8^2}{16}=4$$ Terms…

Question Number 23330 by Tinkutara last updated on 28/Oct/17 $$\mathrm{The}\mathrm{number}\mathrm{of}\mathrm{ordered}\mathrm{pair}\left(\mathrm{s}\right)(x,y)$$$$\mathrm{satisfying}\mathrm{the}\mathrm{equations}\sin x.\cos y=1$$$$\mathrm{and}{x}^2+y^2⩽9{\pi }^2\mathrm{is}/\mathrm{are}$$ Terms of Service Privacy Policy Contact:…

Question Number 23243 by paro123 last updated on 27/Oct/17 $$2^{\mathrm{n}-1}\sin \mathrm{a}\times \sin 2\mathrm{a}\times \sin 3\mathrm{a}\times \dots \dots \times \sin (\mathrm{n}-1)\mathrm{a}=\mathrm{n}\mathrm{why}?$$ Commented by mrW1 last updated on 28/Oct/17 $$\mathrm{this}\mathrm{statement}\mathrm{is}\mathrm{wrong}!$$$$$$$$\mathrm{you}\:\mathrm{can}\:\mathrm{find}\:\mathrm{a}\:\mathrm{lot}\:\mathrm{of}\:\mathrm{examples}:…