What is the value of -1/2 sin(270) ?

The value of -1/2 sin(270) is 1/2

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

-1/2 sin(270)

- \frac{1}{2} sin (27 0^{\circ})

\frac{1}{2}

Solution steps

- \frac{1}{2} sin (27 0^{\circ})

Rewrite using trig identities:

sin (27 0^{\circ}) = 2 sin (13 5^{\circ}) cos (13 5^{\circ})

= - \frac{1}{2} \cdot 2 sin (13 5^{\circ}) cos (13 5^{\circ})

Simplify

= - sin (13 5^{\circ}) cos (13 5^{\circ})

Use the following trivial identity:

sin (13 5^{\circ}) = \frac{2}{2}

Use the following trivial identity:

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

= - \frac{2}{2} (- \frac{2}{2})

Simplify

- \frac{2}{2} (- \frac{2}{2}) : \frac{1}{2}

= \frac{1}{2}

sin (42.3 1^{\circ})

csc (8 5^{\circ})

arccos (\frac{- 2}{29 26})

cos^{2} (\frac{π}{3}) + \frac{1}{2}

2 (0) - cos (0) + sin (0) + 0