Question Number 4418 by Syaka last updated on 23/Jan/16 $${What}\:{the}\:{exact}\:{value}\:{of}\:: \\ $$$${sin}\:\mathrm{10}°\:\left(\mathrm{2}{cos}\:\mathrm{10}°\:+\:\mathrm{1}\right)\left(\mathrm{2}{cos}\:\mathrm{10}°\:−\:\mathrm{1}\right)\:=\:….? \\ $$$$ \\ $$ Answered by Yozzii last updated on 24/Jan/16 $${sin}\mathrm{10}°\left(\mathrm{2}{cos}\mathrm{10}°+\mathrm{1}\right)\left(\mathrm{2}{cos}\mathrm{10}°−\mathrm{1}\right) \\…
Question Number 135490 by benjo_mathlover last updated on 13/Mar/21 $${Combination} \\ $$A committee of 8 people is to be formed from 7 women and 5…
Question Number 69953 by Shamim last updated on 29/Sep/19 $$\mathrm{if}\:\mathrm{tan}\:\theta+\mathrm{sec}\:\theta=\:\sqrt{\mathrm{3}}\:\mathrm{than}\:\mathrm{find}\:\mathrm{out}\:\mathrm{the} \\ $$$$\mathrm{value}\:\mathrm{of}\underset{} {\:}\theta\:\mathrm{where}\:\mathrm{0}^{\mathrm{o}} \leqslant\theta\leqslant\mathrm{2}\pi. \\ $$ Commented by Shamim last updated on 29/Sep/19 $$\mathrm{ans}\:\mathrm{ki}\:\mathrm{only}\:\mathrm{x}=\frac{\pi}{\mathrm{6}}??? \\…
Question Number 4415 by Yozzii last updated on 22/Jan/16 $${Show}\:{that}\:{the}\:{curve}\:{defined}\:{by} \\ $$$${r}={sin}\mathrm{2}\theta−{sin}\mathrm{3}\theta\:\:\:\:\left(\mathrm{0}.\mathrm{2}\pi\leqslant\theta\leqslant\mathrm{0}.\mathrm{6}\pi\right) \\ $$$${is}\:{a}\:{closed}\:{loop}.\: \\ $$$$ \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 4413 by alib last updated on 22/Jan/16 $$\boldsymbol{\mathrm{C}}\mathrm{alculate}\:\mathrm{the}\:\mathrm{sum}\:\mathrm{of}\:\mathrm{2}^{\boldsymbol{{x}}} +\mathrm{2}^{−\boldsymbol{{x}}} , \\ $$$$\mathrm{if}\:\mathrm{4}^{\boldsymbol{{x}}} +\mathrm{4}^{−\boldsymbol{{x}}} =\mathrm{23} \\ $$$$ \\ $$ Answered by prakash jain last…
Question Number 135486 by EDWIN88 last updated on 13/Mar/21 $$\frac{\sqrt{\mathrm{2x}+\mathrm{1}}+\sqrt{\mathrm{x}−\mathrm{1}}}{\:\sqrt{\mathrm{2x}+\mathrm{1}}−\sqrt{\mathrm{x}−\mathrm{1}}}\:=\:\frac{\mathrm{3}}{\:\sqrt{\mathrm{x}+\mathrm{2}}}\: \\ $$ Commented by benjo_mathlover last updated on 13/Mar/21 $${wrong} \\ $$$$ \\ $$ Commented…
Question Number 69944 by otchereabdullai@gmail.com last updated on 29/Sep/19 $$\mathrm{If}\:\mathrm{2}^{\mathrm{x}} \:=\mathrm{0}\:\:\:\:\:\mathrm{find}\:\:\mathrm{x} \\ $$ Commented by otchereabdullai@gmail.com last updated on 29/Sep/19 $$\mathrm{thank}\:\mathrm{you}\:\mathrm{sir} \\ $$ Commented by…
Question Number 4409 by Rasheed Soomro last updated on 22/Jan/16 $$\mathcal{D}{ivide}\:{a}\:{circle}\:{into}\:{two}\:{congruent} \\ $$$${regions}\:{such}\:{that}\:{they}\:{have}\:{no}\: \\ $$$${straightedge}. \\ $$ Commented by prakash jain last updated on 22/Jan/16…
Question Number 135472 by mr W last updated on 13/Mar/21 $${for}\:{x}+{y}+{z}=\mathrm{10}\:{with}\:{x},{y},{z}\in\mathbb{N} \\ $$$${find}\:\Sigma\frac{\mathrm{10}!}{{x}!{y}!{z}!} \\ $$ Answered by Ñï= last updated on 13/Mar/21 $$\Sigma\begin{pmatrix}{\:\:\:\mathrm{10}}\\{{x},{y},{z}}\end{pmatrix}=\left(\mathrm{1}+\mathrm{1}+\mathrm{1}\right)^{\mathrm{10}} =\mathrm{3}^{\mathrm{10}} \\…
Question Number 69939 by mr W last updated on 29/Sep/19 $${x},{y},{z}\:\in\:{Z}^{+} \\ $$$${find}\:{all}\:{solutions}\:{of}\:\boldsymbol{{xy}}=\left(\boldsymbol{{x}}+\boldsymbol{{y}}\right)\boldsymbol{{z}} \\ $$ Commented by Rasheed.Sindhi last updated on 29/Sep/19 $${k}\in\mathbb{Z}^{+} \:{in}\:{the}\:{following}. \\…