What is the value of sqrt(2)cos(pi/2)-pi/2 ?

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

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

sqrt(2)cos(pi/2)-pi/2

2 cos (\frac{π}{2}) - \frac{π}{2}

- \frac{π}{2}

Solution steps

2 cos (\frac{π}{2}) - \frac{π}{2}

Use the following trivial identity:

cos (\frac{π}{2}) = 0

= 2 \cdot 0 - \frac{π}{2}

Simplify

= - \frac{π}{2}

\frac{1 - cos ( 1 )}{1 ^{2}}

2 π cos (π) - π^{2} sin (π)

cos^{2} (- 4 5^{\circ})

cos (\frac{π}{15})

\frac{1}{sin ( 1 0 ^{\circ} )} - \frac{3}{cos ( 1 0 ^{\circ} )}

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