What is the general solution for cos(x)= 18/25 ?

The general solution for cos(x)= 18/25 is x=0.76699…+2pin,x=2pi-0.76699…+2pin

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cos(x)= 18/25

cos (x) = \frac{18}{25}

x = 0.76699 \dots + 2 πn, x = 2 π - 0.76699 \dots + 2 πn

Degrees

x = 43.94551 \dots^{\circ} + 36 0^{\circ} n, x = 316.05448 \dots^{\circ} + 36 0^{\circ} n

Solution steps

cos (x) = \frac{18}{25}

Apply trig inverse properties

cos (x) = \frac{18}{25}

General solutions for

cos (x) = \frac{18}{25}

cos (x) = a \Rightarrow x = arccos (a) + 2 πn, x = 2 π - arccos (a) + 2 πn

x = arccos (\frac{18}{25}) + 2 πn, x = 2 π - arccos (\frac{18}{25}) + 2 πn

x = arccos (\frac{18}{25}) + 2 πn, x = 2 π - arccos (\frac{18}{25}) + 2 πn

Show solutions in decimal form

x = 0.76699 \dots + 2 πn, x = 2 π - 0.76699 \dots + 2 πn

sin (x) = - \frac{2}{2}, - π \leq x \leq π

w, s (t) = A e^{- c t} cos (wt + b)

0 = 2 sin (t) + cos (2 t)

8 cos (θ) = - 4

2 sin (3 x + π) = - 1

What is the general solution for cos(x)= 18/25 ?
The general solution for cos(x)= 18/25 is x=0.76699…+2pin,x=2pi-0.76699…+2pin