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

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

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cos(u)=-15/17

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

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

Solution steps

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

Apply trig inverse properties

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

Show solutions in decimal form

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

2 cos (\frac{x}{3}) = 1

0 = 3 tan (x)

sin (b) = \frac{4}{5}

14 (1 - cos (θ)) = sin^{2} (θ)

3 tan (x) sin (x) - 3 tan (x) = 0

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