Without-using-calculator-what-is-the-value-of-Cos-7pi-6-

Question Number 181756 by Mastermind last updated on 29/Nov/22

Without using calculator, what is the

value of Cos (\frac{7 π}{6}) ?

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Answered by a.lgnaoui last updated on 29/Nov/22

\cos (\frac{7 π}{6}) = \cos (\frac{6 π + π}{6}) = - \cos (\frac{π}{6}) = \frac{- \sqrt{3}}{2}

Answered by CElcedricjunior last updated on 29/Nov/22

c o s (\frac{7 π}{6}) = c o s (π + \frac{π}{6}) = - c o s \frac{π}{6} = - \frac{\sqrt{3}}{2}

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