What is the general solution for cos(x)= pi/4 ?

The general solution for cos(x)= pi/4 is x=0.66745…+2pin,x=2pi-0.66745…+2pin

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

cos(x)= pi/4

cos (x) = \frac{π}{4}

x = 0.66745 \dots + 2 πn, x = 2 π - 0.66745 \dots + 2 πn

Solution steps

cos (x) = \frac{π}{4}

Apply trig inverse properties

x = arccos (\frac{π}{4}) + 2 πn, x = 2 π - arccos (\frac{π}{4}) + 2 πn

Show solutions in decimal form

x = 0.66745 \dots + 2 πn, x = 2 π - 0.66745 \dots + 2 πn

cot (x) = \frac{3}{7}, cos (x) > 0

4 tanh (x) - \frac{1}{cosh ( x )} = 1

2 sin (θ) cos (θ) = sin (θ)

53 cot (x) + 5 = 0

cos (θ) = - \frac{11}{6}

What is the general solution for cos(x)= pi/4 ?
The general solution for cos(x)= pi/4 is x=0.66745…+2pin,x=2pi-0.66745…+2pin