Evaluate:(i) cotsin-134+sec-143(ii) sintan-1x+tan-11x for x<0(iii) sin – InterviewSolution

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1.	Evaluate:(i) cotsin-134+sec-143(ii) sintan-1x+tan-11x for x<0(iii) sintan-1x+tan-11x for x>0(iv) cottan-1a+cot-1a(v) cossec-1x+cosec-1x, x≥1
Answer» Evaluate: (i) $\cot (\sin^{- 1} \frac{3}{4} + \sec^{- 1} \frac{4}{3})$ (ii) $\sin (\tan^{- 1} x + \tan^{- 1} \frac{1}{x}) for x < 0$ (iii) $\sin (\tan^{- 1} x + \tan^{- 1} \frac{1}{x}) for x > 0$ (iv) $\cot (\tan^{- 1} a + \cot^{- 1} a)$ (v) $\cos (\sec^{- 1} x + {cosec}^{- 1} x), \|x\| \geq 1$

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