What is the general solution for cos(x)= 7/9 ?

The general solution for cos(x)= 7/9 is x=0.67967…+2pin,x=2pi-0.67967…+2pin

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cos(x)= 7/9

cos (x) = \frac{7}{9}

x = 0.67967 \dots + 2 πn, x = 2 π - 0.67967 \dots + 2 πn

Solution steps

cos (x) = \frac{7}{9}

Apply trig inverse properties

x = arccos (\frac{7}{9}) + 2 πn, x = 2 π - arccos (\frac{7}{9}) + 2 πn

Show solutions in decimal form

x = 0.67967 \dots + 2 πn, x = 2 π - 0.67967 \dots + 2 πn

2 csc (x) + 3 = 0

sin (- x) = \frac{2}{2}

4 tan^{2} (θ) = 12

4 sin (x) = 3

0.5 = cos (x)

What is the general solution for cos(x)= 7/9 ?
The general solution for cos(x)= 7/9 is x=0.67967…+2pin,x=2pi-0.67967…+2pin