What is the general solution for cos(θ)=-0.7 ?

The general solution for cos(θ)=-0.7 is θ=2.34619…+2pin,θ=-2.34619…+2pin

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cos(θ)=-0.7

cos (θ) = - 0.7

θ = 2.34619 \dots + 2 πn, θ = - 2.34619 \dots + 2 πn

Degrees

θ = 134.42700 \dots^{\circ} + 36 0^{\circ} n, θ = - 134.42700 \dots^{\circ} + 36 0^{\circ} n

Solution steps

cos (θ) = - 0.7

Apply trig inverse properties

cos (θ) = - 0.7

General solutions for

cos (θ) = - 0.7

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

θ = arccos (- 0.7) + 2 πn, θ = - arccos (- 0.7) + 2 πn

θ = arccos (- 0.7) + 2 πn, θ = - arccos (- 0.7) + 2 πn

Show solutions in decimal form

θ = 2.34619 \dots + 2 πn, θ = - 2.34619 \dots + 2 πn

What is the general solution for cos(θ)=-0.7 ?
The general solution for cos(θ)=-0.7 is θ=2.34619…+2pin,θ=-2.34619…+2pin