What is the general solution for cos(x)= 21/29 ?

The general solution for cos(x)= 21/29 is x=0.76101…+2pin,x=2pi-0.76101…+2pin

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cos(x)= 21/29

cos (x) = \frac{21}{29}

x = 0.76101 \dots + 2 πn, x = 2 π - 0.76101 \dots + 2 πn

Degrees

x = 43.60281 \dots^{\circ} + 36 0^{\circ} n, x = 316.39718 \dots^{\circ} + 36 0^{\circ} n

Solution steps

cos (x) = \frac{21}{29}

Apply trig inverse properties

cos (x) = \frac{21}{29}

General solutions for

cos (x) = \frac{21}{29}

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

x = arccos (\frac{21}{29}) + 2 πn, x = 2 π - arccos (\frac{21}{29}) + 2 πn

x = arccos (\frac{21}{29}) + 2 πn, x = 2 π - arccos (\frac{21}{29}) + 2 πn

Show solutions in decimal form

x = 0.76101 \dots + 2 πn, x = 2 π - 0.76101 \dots + 2 πn

What is the general solution for cos(x)= 21/29 ?
The general solution for cos(x)= 21/29 is x=0.76101…+2pin,x=2pi-0.76101…+2pin