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

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

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sec(-(5pi)/6)

sec (- \frac{5 π}{6})

- \frac{2 3}{3}

Decimal Notation

- 1.15470 \dots

Solution steps

sec (- \frac{5 π}{6})

Use the following property:

sec (- x) = sec (x)

sec (- \frac{5 π}{6}) = sec (\frac{5 π}{6})

= sec (\frac{5 π}{6})

Use the following trivial identity:

sec (\frac{5 π}{6}) = - \frac{2 3}{3}

sec (\frac{5 π}{6})

sec (x)

periodicity table with

2 πn

cycle:

x 0 \frac{π}{6} \frac{π}{4} \frac{π}{3} \frac{π}{2} \frac{2 π}{3} \frac{3 π}{4} \frac{5 π}{6} sec (x) 1 \frac{2 3}{3} 22 Undefined - 2 - 2 - \frac{2 3}{3} x π \frac{7 π}{6} \frac{5 π}{4} \frac{4 π}{3} \frac{3 π}{2} \frac{5 π}{3} \frac{7 π}{4} \frac{11 π}{6} sec (x) - 1 - \frac{2 3}{3} - 2 - 2 Undefined 22 \frac{2 3}{3}

= - \frac{2 3}{3}

= - \frac{2 3}{3}

4 sin (\frac{π}{2})

tan (\frac{5 π}{2})

sin (\frac{- 2 π}{3})

sin (7 5^{\circ}) + sin (1 5^{\circ})

tan^{2} (\frac{π}{4})

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