What is the general solution for cos(x)= 11/14 ?

The general solution for cos(x)= 11/14 is x=0.66694…+2pin,x=2pi-0.66694…+2pin

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cos(x)= 11/14

cos (x) = \frac{11}{14}

x = 0.66694 \dots + 2 πn, x = 2 π - 0.66694 \dots + 2 πn

Degrees

x = 38.21321 \dots^{\circ} + 36 0^{\circ} n, x = 321.78678 \dots^{\circ} + 36 0^{\circ} n

Solution steps

cos (x) = \frac{11}{14}

Apply trig inverse properties

cos (x) = \frac{11}{14}

General solutions for

cos (x) = \frac{11}{14}

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

x = arccos (\frac{11}{14}) + 2 πn, x = 2 π - arccos (\frac{11}{14}) + 2 πn

x = arccos (\frac{11}{14}) + 2 πn, x = 2 π - arccos (\frac{11}{14}) + 2 πn

Show solutions in decimal form

x = 0.66694 \dots + 2 πn, x = 2 π - 0.66694 \dots + 2 πn

2 sin (θ) cos (θ) + 2 sin (θ) = 0

cot (3 8^{\circ}) = tan (2 x)

sin (x \cdot 240) = 0

sin^{2} (x) + 1 = \frac{3}{2}

cos (θ) = 0.8126

What is the general solution for cos(x)= 11/14 ?
The general solution for cos(x)= 11/14 is x=0.66694…+2pin,x=2pi-0.66694…+2pin