What is the value of sec(135)csc(150) ?

The value of sec(135)csc(150) is -2sqrt(2)

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sec(135)csc(150)

sec (13 5^{\circ}) csc (15 0^{\circ})

- 22

Decimal Notation

- 2.82842 \dots

Solution steps

sec (13 5^{\circ}) csc (15 0^{\circ})

Use the following trivial identity:

sec (13 5^{\circ}) = - 2

sec (13 5^{\circ})

sec (x)

periodicity table with

36 0^{\circ} n

cycle:

x 0 3 0^{\circ} 4 5^{\circ} 6 0^{\circ} 9 0^{\circ} 12 0^{\circ} 13 5^{\circ} 15 0^{\circ} sec (x) 1 \frac{2 3}{3} 22 Undefined - 2 - 2 - \frac{2 3}{3} x 18 0^{\circ} 21 0^{\circ} 22 5^{\circ} 24 0^{\circ} 27 0^{\circ} 30 0^{\circ} 31 5^{\circ} 33 0^{\circ} sec (x) - 1 - \frac{2 3}{3} - 2 - 2 Undefined 22 \frac{2 3}{3}

= - 2

Rewrite using trig identities:

csc (15 0^{\circ}) = 2

csc (15 0^{\circ})

Rewrite using trig identities:

\frac{1}{sin ( 15 0 ^{\circ} )}

csc (15 0^{\circ})

Use the basic trigonometric identity:

csc (x) = \frac{1}{sin ( x )}

= \frac{1}{sin ( 15 0 ^{\circ} )}

= \frac{1}{sin ( 15 0 ^{\circ} )}

Use the following trivial identity:

sin (15 0^{\circ}) = \frac{1}{2}

sin (15 0^{\circ})

sin (x)

periodicity table with

36 0^{\circ} n

cycle:

x 0 3 0^{\circ} 4 5^{\circ} 6 0^{\circ} 9 0^{\circ} 12 0^{\circ} 13 5^{\circ} 15 0^{\circ} sin (x) 0 \frac{1}{2} \frac{2}{2} \frac{3}{2} 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} x 18 0^{\circ} 21 0^{\circ} 22 5^{\circ} 24 0^{\circ} 27 0^{\circ} 30 0^{\circ} 31 5^{\circ} 33 0^{\circ} sin (x) 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2}

= \frac{1}{2}

= \frac{1}{\frac{1}{2}}

Simplify

= 2

= (- 2) \cdot 2

Simplify

= - 22

arcsin (0.454)

2 cos^{2} (\frac{π}{11}) - 1

1 - cos^{2} (1 5^{\circ})

5 tan (6 5^{\circ})

6 sin (\frac{π}{4}) cos (\frac{π}{6})

What is the value of sec(135)csc(150) ?
The value of sec(135)csc(150) is -2sqrt(2)