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(i) Find the principal value of (ii) Prove that cos-1(\(\frac{\sqrt3}{2}\))

(ii) Prove that 2 sin-1(\(\frac{3}{5}\)) = tan-1 (\(\frac{24}{7}\))

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(i) cos -1 \(\frac{\sqrt 3}{2}\) = \(\frac{π}{6}\)

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