Cos cos -1 cos 8- 7 - tan -1 tan 8- 7 has the value equal to -

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Integration of Piecewise Continuous Functions

cos cos -1 co...

Question

$c o s ({c o s}^{- 1} c o s (\frac{8 π}{7}) + {t a n}^{- 1} t a n (\frac{8 π}{7}))$ has the value equal to -

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c o s \frac{π}{7}

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Similar questions

cos \frac{2 π}{7}, cos \frac{4 π}{7}, cos \frac{6 π}{7}

8 x^{3} + 4 x^{2} - 4 x - 1 = 0

cos \frac{π}{7} cos \frac{2 π}{7} cos \frac{3 π}{7}

cos [{cos}^{- 1} cos [\frac{8 π}{7}] + {tan}^{- 1} tan [\frac{8 π}{7}]]

cos \frac{π}{7}, cos \frac{3 π}{7}, cos \frac{5 π}{7}

8 x^{3} - 4 x^{2} - 4 x + 1 = 0

sec \frac{π}{7} + sec \frac{3 π}{7} + sec \frac{5 π}{7} =

2 {cos}^{3} \frac{π}{7} - {cos}^{2} \frac{π}{7} - cos \frac{π}{7}

= \frac{1}{b}

cos \frac{3 π}{7} - cos \frac{2 π}{7} + cos \frac{π}{7} = \frac{1}{m}

m

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