What is the general solution for cos(x)=0.818 ?

The general solution for cos(x)=0.818 is x=0.61287…+2pin,x=2pi-0.61287…+2pin

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cos(x)=0.818

cos (x) = 0.818

x = 0.61287 \dots + 2 πn, x = 2 π - 0.61287 \dots + 2 πn

Degrees

x = 35.11491 \dots^{\circ} + 36 0^{\circ} n, x = 324.88508 \dots^{\circ} + 36 0^{\circ} n

Solution steps

cos (x) = 0.818

Apply trig inverse properties

cos (x) = 0.818

General solutions for

cos (x) = 0.818

cos (x) = a \Rightarrow x = arccos (a) + 2 πn, x = 2 π - arccos (a) + 2 πn

x = arccos (0.818) + 2 πn, x = 2 π - arccos (0.818) + 2 πn

x = arccos (0.818) + 2 πn, x = 2 π - arccos (0.818) + 2 πn

Show solutions in decimal form

x = 0.61287 \dots + 2 πn, x = 2 π - 0.61287 \dots + 2 πn

What is the general solution for cos(x)=0.818 ?
The general solution for cos(x)=0.818 is x=0.61287…+2pin,x=2pi-0.61287…+2pin