What is the general solution for cos(x)=-15/17 ?

The general solution for cos(x)=-15/17 is x=2.65163…+2pin,x=-2.65163…+2pin

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cos(x)=-15/17

cos (x) = - \frac{15}{17}

x = 2.65163 \dots + 2 πn, x = - 2.65163 \dots + 2 πn

Solution steps

cos (x) = - \frac{15}{17}

Apply trig inverse properties

x = arccos (- \frac{15}{17}) + 2 πn, x = - arccos (- \frac{15}{17}) + 2 πn

Show solutions in decimal form

x = 2.65163 \dots + 2 πn, x = - 2.65163 \dots + 2 πn

tan (\frac{x + π}{6}) = 3

tan (x) = \frac{- 1}{2}

tan (x) = \frac{- 1}{3}

sin (x) = \frac{4}{11}

7 sin (\frac{π}{3} x) = 2

What is the general solution for cos(x)=-15/17 ?
The general solution for cos(x)=-15/17 is x=2.65163…+2pin,x=-2.65163…+2pin