What is the general solution for cos(x)= 2/9 ?

The general solution for cos(x)= 2/9 is x=1.34670…+2pin,x=2pi-1.34670…+2pin

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cos(x)= 2/9

cos (x) = \frac{2}{9}

x = 1.34670 \dots + 2 πn, x = 2 π - 1.34670 \dots + 2 πn

Solution steps

cos (x) = \frac{2}{9}

Apply trig inverse properties

x = arccos (\frac{2}{9}) + 2 πn, x = 2 π - arccos (\frac{2}{9}) + 2 πn

Show solutions in decimal form

x = 1.34670 \dots + 2 πn, x = 2 π - 1.34670 \dots + 2 πn

x, tan (x) + tan (y) = 1

x, 4 cos (x) cos (y) = 3

sin (x) = 0, 57

2 \cdot sin (x) = 1

tan (y) sin^{2} (y) = 3 tan (y)

What is the general solution for cos(x)= 2/9 ?
The general solution for cos(x)= 2/9 is x=1.34670…+2pin,x=2pi-1.34670…+2pin