Category: Trigonometry

Question Number 58406 by rahul 19 last updated on 22/Apr/19 $$1)Valueof20!+\frac{21!}{1!}+\frac{22!}{2!}+\dots .+\frac{60!}{40!}is?$$$$2)Sumofallsolutionsof{eq}^n:$$$$\cos 3\theta =\sin 2\theta ininterval[-\frac{\pi }{2},\frac{\pi }{2}]is?$$ Answered by MJS last updated on 23/Apr/19…

Question Number 189468 by cortano12 last updated on 17/Mar/23 $$\mathrm{If}\tan \left(\frac{\mathrm{x}}{2}\right)=\csc \mathrm{x}-\sin \mathrm{x},\mathrm{then}$$$$\tan {}^2\left(\frac{\mathrm{x}}{2}\right)=?$$ Commented by mehdee42 last updated on 17/Mar/23 $$thegivenrelationiswrong.$$$${tan}\left(\frac{{x}}{\mathrm{2}}\right)={cscx}−{cotx}…

Question Number 189428 by Rupesh123 last updated on 16/Mar/23 Answered by BaliramKumar last updated on 16/Mar/23 $$tanxtan(60°+x)tan(60°-x)$$$$tanx\left[\frac{tan60°+tanx}{1-tan60°tanx}\right]\left[\frac{tan60°-tanx}{1+tan60°tanx}\right]$$$$tanx\left[\frac{\sqrt{3}+tanx}{1-\sqrt{3}tanx}\right]\left[\frac{\sqrt{3}-tanx}{1+\sqrt{3}tanx}\right]$$$${tanx}\left[\frac{\left(\mathrm{3}\:−\:{tan}^{\mathrm{2}} {x}\right.}{\mathrm{1}−\mathrm{3}\:{tan}^{\mathrm{2}} {x}}\right]…

Question Number 189256 by BaliramKumar last updated on 13/Mar/23 $$Provethat$$$$\sin 10°=\frac{1}{2}\sqrt{2-\sqrt{2+\sqrt{2+\sqrt{2-\sqrt{2+\sqrt{2+\sqrt{2-\sqrt{2+\sqrt{2+\sqrt{2-\sqrt{2+\sqrt{2+\sqrt{2-\dots \dots \dots ..\mathrm{\infty }}}}}}}}}}}}}}$$ Answered by Frix last updated on 14/Mar/23 $$\sin 10°=\sin \frac{\pi }{18}$$$$\mathrm{First}\:\mathrm{let}'\mathrm{s}\:\mathrm{find}\:{x}=\sqrt{\mathrm{2}−\sqrt{\mathrm{2}+\sqrt{\mathrm{2}+{x}}}} \…

Question Number 123641 by benjo_mathlover last updated on 27/Nov/20 Terms of Service Privacy Policy Contact: info@tinkutara.com