cotcosec−$$153+$$$$tan$$−$$123is$$

cotcosec−$$153+$$$$tan$$−$$123=cottan-134+$$$$tan$$−$$123$$ $$=cottan-134+231-3423$$ $$=cottan-1176$$ $$=cotcot-1617$$ $$=617$$≅$$0.35$$

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$\cot (\cos e c^{- 1} \frac{5}{3} + \tan^{- 1} \frac{2}{3})$ is

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Solution

$\cot (\cos e c^{- 1} \frac{5}{3} + \tan^{- 1} \frac{2}{3}) = c o t (\tan^{- 1} \frac{3}{4} + \tan^{- 1} \frac{2}{3}) = c o t [\tan^{- 1} (\frac{\frac{3}{4} + \frac{2}{3}}{1 - \frac{3}{4} \frac{2}{3}})] = c o t (\tan^{- 1} \frac{17}{6}) = c o t (c o t^{- 1} \frac{6}{17}) = \frac{6}{17} ≅ 0.35$

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