What is the general solution for cos(x)= 15/19 ?

The general solution for cos(x)= 15/19 is x=0.66084…+2pin,x=2pi-0.66084…+2pin

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cos(x)= 15/19

cos (x) = \frac{15}{19}

x = 0.66084 \dots + 2 πn, x = 2 π - 0.66084 \dots + 2 πn

Solution steps

cos (x) = \frac{15}{19}

Apply trig inverse properties

x = arccos (\frac{15}{19}) + 2 πn, x = 2 π - arccos (\frac{15}{19}) + 2 πn

Show solutions in decimal form

x = 0.66084 \dots + 2 πn, x = 2 π - 0.66084 \dots + 2 πn

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

(sec (x) + 1)^{2} - tan (x) = 0

cos (A) = \frac{8}{17}

sec (θ) = \frac{6}{- 5}, sec (- θ)

cos (π z) = 0

What is the general solution for cos(x)= 15/19 ?
The general solution for cos(x)= 15/19 is x=0.66084…+2pin,x=2pi-0.66084…+2pin