What is the value of cos(((5pi))/6) ?

The value of cos(((5pi))/6) is -(sqrt(3))/2

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Find the Exact Value cos((5pi)/6)

cos (\frac{( 5 π )}{6})

- \frac{3}{2}

Solution steps

cos (\frac{( 5 π )}{6})

= cos (\frac{5 π}{6})

Use the following trivial identity:

cos (\frac{5 π}{6}) = - \frac{3}{2}

= - \frac{3}{2}

cos (θ) = \frac{4}{5}, 27 0^{\circ} < θ < 36 0^{\circ}

tan (\frac{( 5 π )}{6})

sin (\frac{200}{90})

x, tan (x) = 2

x, cos (2 x) = - cos (x)

What is the value of cos(((5pi))/6) ?
The value of cos(((5pi))/6) is -(sqrt(3))/2