What is the general solution for cos(x)=-0.346 ?

The general solution for cos(x)=-0.346 is x=1.92410…+2pin,x=-1.92410…+2pin

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cos(x)=-0.346

cos (x) = - 0.346

x = 1.92410 \dots + 2 πn, x = - 1.92410 \dots + 2 πn

Solution steps

cos (x) = - 0.346

Apply trig inverse properties

x = arccos (- 0.346) + 2 πn, x = - arccos (- 0.346) + 2 πn

Show solutions in decimal form

x = 1.92410 \dots + 2 πn, x = - 1.92410 \dots + 2 πn

3 sin (t) = - 3 + cos (t)

\frac{tan ( x )}{3} = 3

cos (x) = 0.45, cos (π - x)

4 cos^{2} (x) + 9 sin (x) - 9 = 0

tan (θ) = - \frac{12}{5}, \frac{π}{2} \leq θ \leq π

What is the general solution for cos(x)=-0.346 ?
The general solution for cos(x)=-0.346 is x=1.92410…+2pin,x=-1.92410…+2pin