What is the general solution for cos(x)=-0.7 ?

The general solution for cos(x)=-0.7 is x=2.34619…+2pin,x=-2.34619…+2pin

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cos(x)=-0.7

cos (x) = - 0.7

x = 2.34619 \dots + 2 πn, x = - 2.34619 \dots + 2 πn

Solution steps

cos (x) = - 0.7

Apply trig inverse properties

x = arccos (- 0.7) + 2 πn, x = - arccos (- 0.7) + 2 πn

Show solutions in decimal form

x = 2.34619 \dots + 2 πn, x = - 2.34619 \dots + 2 πn

tan^{2} (θ) - tan (θ) = 0

cos (8 0^{\circ})

3 tan (θ) - 1 = 0

sin (x) = - \frac{3}{2}

\frac{sin ( 0.001 )}{0.001}

What is the general solution for cos(x)=-0.7 ?
The general solution for cos(x)=-0.7 is x=2.34619…+2pin,x=-2.34619…+2pin