es

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

pi/2 cos(2pi)

Solución

\frac{π}{2} cos (2 π)

Solución

\frac{π}{2}

+1

Notación decimal

1.57079 \dots

Pasos de solución

\frac{π}{2} cos (2 π)

Re-escribir usando identidades trigonométricas:

cos (2 π) = 1

cos (2 π)

cos (2 π) = cos (0)

cos (2 π)

Reescribir

2 π

como

2 π + 0

= cos (2 π + 0)

Utilizar la periodicidad de

cos

:

cos (x + 2 π) = cos (x)

cos (2 π + 0) = cos (0)

= cos (0)

= cos (0)

Utilizar la siguiente identidad trivial:

cos (0) = 1

cos (0)

cos (x)

tabla de valores periódicos con

2 πn

intervalos:

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} cos (x) 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} 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} cos (x) - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2} 0 \frac{1}{2} \frac{2}{2} \frac{3}{2}

= 1

= 1

= \frac{π}{2} \cdot 1

Simplificar

= \frac{π}{2}

Ejemplos populares

1/(1-sin(pi/6))

\frac{1}{1 - sin ( \frac{π}{6} )}

cot(arcsin(1/4))

cot (arcsin (\frac{1}{4}))

(sin(240))/(cos(120))

\frac{sin ( 24 0 ^{\circ} )}{cos ( 12 0 ^{\circ} )}

5 + 4 cos (\frac{π}{2})

(sin(30))(tan(45))+(tan(30))(sin(60))

(sin (3 0^{\circ})) (tan (4 5^{\circ})) + (tan (3 0^{\circ})) (sin (6 0^{\circ}))