What is the general solution for cos(θ)=-0.29 ?

The general solution for cos(θ)=-0.29 is θ=1.86502…+2pin,θ=-1.86502…+2pin

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cos(θ)=-0.29

cos (θ) = - 0.29

θ = 1.86502 \dots + 2 πn, θ = - 1.86502 \dots + 2 πn

Solution steps

cos (θ) = - 0.29

Apply trig inverse properties

θ = arccos (- 0.29) + 2 πn, θ = - arccos (- 0.29) + 2 πn

Show solutions in decimal form

θ = 1.86502 \dots + 2 πn, θ = - 1.86502 \dots + 2 πn

sin (x) - 7 = cos (x) - 7

tan (a) = \frac{15}{8}

cot^{2} (x) = - cot (x)

2 cos (θ) = - 3, 0 \leq θ < 2 π

2 cos (3 θ) = - 3, 0 \leq θ \leq 2 π

What is the general solution for cos(θ)=-0.29 ?
The general solution for cos(θ)=-0.29 is θ=1.86502…+2pin,θ=-1.86502…+2pin