What is the general solution for cos(x)= 7/10 ?

The general solution for cos(x)= 7/10 is x=0.79539…+2pin,x=2pi-0.79539…+2pin

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cos(x)= 7/10

cos (x) = \frac{7}{10}

x = 0.79539 \dots + 2 πn, x = 2 π - 0.79539 \dots + 2 πn

Solution steps

cos (x) = \frac{7}{10}

Apply trig inverse properties

x = arccos (\frac{7}{10}) + 2 πn, x = 2 π - arccos (\frac{7}{10}) + 2 πn

Show solutions in decimal form

x = 0.79539 \dots + 2 πn, x = 2 π - 0.79539 \dots + 2 πn

2 cos (2 x) + 3 = 2

2 cos (x) = sec (x)

tan (5 x) = - 1

x, 7 y^{2} + sin (3 x) = 12 - y^{4}

sin (\frac{π x}{2}) + 1 = 0

What is the general solution for cos(x)= 7/10 ?
The general solution for cos(x)= 7/10 is x=0.79539…+2pin,x=2pi-0.79539…+2pin