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Solve the system of equations. frac{2}...

Solve the system of equations. `frac{2}{x}+frac{3}{y}+frac{10}{z}=4` , `frac{4}{x}-frac{6}{y}+frac{5}{z}=1` and `frac{6}{x}+frac{9}{y}-frac{20}{z}=2`

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Solve the system of equations. frac{6}{x}+frac{9}{y}-frac{20}{z}=2 , frac{4}{x}-frac{6}{y}+frac{5}{z}=1 and frac{2}{x}+frac{3}{y}+frac{10}{z}=4

Solve the system of equations. frac{4}{x}-frac{6}{y}+frac{5}{z}=1 , frac{2}{x}+frac{3}{y}+frac{10}{z}=4 and frac{6}{x}+frac{9}{y}-frac{20}{z}=2

Solve (use matrix method): frac{2]{x}-frac{3]{y}+frac{3]{z}=10 , frac{1]{x}+frac{1]{y}+frac{1]{z}=10 , frac{3]{x}-frac{1]{y}+frac{2]{z}=13 .

tan^-1 frac{2}{11} + tan^-1 frac{7}{24}= frac{1}{2}cos^-1 frac{3}{5}

2tan^-1 frac{1}{3} + tan^-1 frac{1}{7}= frac {pi}{4}

Find d.r. of the line frac{4-x}{2}=frac{y}{6}=frac{1-z}{3}

tan^-1 frac{1}{2} + tan^-1 frac{2}{11}= frac{1}{2}sin^-1 frac{24}{25}

tan^-1 frac{1}{5} + tan^-1 frac{1}{7} + tan^-1 frac {1}{3} + tan^-1 frac{1}{8}= frac{pi}{4}

tan^-1 frac{1}{2} + tan^-1 frac {1}{7} = tan^-1 frac{9}{13}

sin^-1 frac{8}{17}+ sin^-1 frac {3}{5}= tan^-1 frac{77}{36}