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Popular >

-5cos(-pi/6)

Solution

- 5 cos (- \frac{π}{6})

Solution

- \frac{5 3}{2}

+1

Solution steps

- 5 cos (- \frac{π}{6})

Rewrite using trig identities:

cos (- \frac{π}{6}) = \frac{3}{2}

= - 5 \cdot \frac{3}{2}

Simplify

- 5 \cdot \frac{3}{2} : - \frac{5 3}{2}

= - \frac{5 3}{2}

Popular Examples

arctan(1/11)+arctan(11)

arctan (\frac{1}{11}) + arctan (11)

arctan(4/(sqrt(3)))

arctan (\frac{4}{3})

arcsin(1.41)sin(30.1)

arcsin (1.41) sin (30. 1^{\circ})

arcsin (\frac{2}{10})

limit as x approaches infinity of arctan(x/2)

x \to \infty lim (arctan (\frac{x}{2}))

Frequently Asked Questions (FAQ)

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