Prove the following results(i) tancos-145+tan-123=176(ii) cossin-135+c – InterviewSolution

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1.	Prove the following results(i) tancos-145+tan-123=176(ii) cossin-135+cot-132=6513(iii) tansin-1513+cos-135=6316 (iv) sincos-135+sin-1513=6365
Answer» Prove the following results (i) $\tan (\cos^{- 1} \frac{4}{5} + \tan^{- 1} \frac{2}{3}) = \frac{17}{6}$ (ii) $\cos (\sin^{- 1} \frac{3}{5} + \cot^{- 1} \frac{3}{2}) = \frac{6}{5 \sqrt{13}}$ (iii) $\tan (\sin^{- 1} \frac{5}{13} + \cos^{- 1} \frac{3}{5}) = \frac{63}{16}$ (iv) $\sin (\cos^{- 1} \frac{3}{5} + \sin^{- 1} \frac{5}{13}) = \frac{63}{65}$

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