What is the general solution for cos(x)=-0.83 ?

The general solution for cos(x)=-0.83 is x=2.54990…+2pin,x=-2.54990…+2pin

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cos(x)=-0.83

cos (x) = - 0.83

x = 2.54990 \dots + 2 πn, x = - 2.54990 \dots + 2 πn

Solution steps

cos (x) = - 0.83

Apply trig inverse properties

x = arccos (- 0.83) + 2 πn, x = - arccos (- 0.83) + 2 πn

Show solutions in decimal form

x = 2.54990 \dots + 2 πn, x = - 2.54990 \dots + 2 πn

y, x = cot (y)

x, 2 cos (\frac{π x}{3}) = 1

cos (x) = - 0.16

cos (x) = - 0.39

7 tan (θ) + 4 = 0

What is the general solution for cos(x)=-0.83 ?
The general solution for cos(x)=-0.83 is x=2.54990…+2pin,x=-2.54990…+2pin