What is the general solution for cos(x)=-(22)/(7.28*sqrt(20)) ?

The general solution for cos(x)=-(22)/(7.28*sqrt(20)) is x=2.31275…+2pin,x=-2.31275…+2pin

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cos(x)=-(22)/(7.28*sqrt(20))

cos (x) = - \frac{22}{7.28 \cdot 20}

x = 2.31275 \dots + 2 πn, x = - 2.31275 \dots + 2 πn

Solution steps

cos (x) = - \frac{22}{7.28 20}

Simplify

- \frac{22}{7.28 20} : - \frac{11 5}{36.4}

Apply trig inverse properties

x = arccos (- \frac{11 5}{36.4}) + 2 πn, x = - arccos (- \frac{11 5}{36.4}) + 2 πn

Show solutions in decimal form

x = 2.31275 \dots + 2 πn, x = - 2.31275 \dots + 2 πn

sec^{2} (x) = 4 tan (x)

x, 1 + sin (2 x - 3 0^{\circ}) = 0

cos (x^{2}) = sin (x^{2})

\frac{cos ( - x )}{sin ( x )} = 0

5 sin (2 x) + 3 cos (2 x) = 0, 0^{\circ} \leq x \leq 18 0^{\circ}

What is the general solution for cos(x)=-(22)/(7.28*sqrt(20)) ?
The general solution for cos(x)=-(22)/(7.28*sqrt(20)) is x=2.31275…+2pin,x=-2.31275…+2pin