What is the general solution for cos(θ)=(-0.68159) ?

The general solution for cos(θ)=(-0.68159) is θ=2.32072…+2pin,θ=-2.32072…+2pin

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cos(θ)=(-0.68159)

cos (θ) = (- 0.68159)

θ = 2.32072 \dots + 2 πn, θ = - 2.32072 \dots + 2 πn

Solution steps

cos (θ) = (- 0.68159)

Apply trig inverse properties

θ = arccos (- 0.68159) + 2 πn, θ = - arccos (- 0.68159) + 2 πn

Show solutions in decimal form

θ = 2.32072 \dots + 2 πn, θ = - 2.32072 \dots + 2 πn

cot (x + \frac{5 π}{6}) = 3

θ, y = sin (θ)

sec^{2} (x) - 4 tan^{2} (x) = 0

6 cos^{2} (x) + cos (2 x) = 5

tanh (m L) = 0.99

What is the general solution for cos(θ)=(-0.68159) ?
The general solution for cos(θ)=(-0.68159) is θ=2.32072…+2pin,θ=-2.32072…+2pin