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Popular >

inverse of cos(2θ)

Solution

inverse

cos (2 θ)

Solution

\frac{arccos ( θ )}{2}

Solution steps

cos (a) = b \Rightarrow a = arccos (b)

2 θ = arccos (y)

Solve for

θ, 2 θ = arccos (y)

\frac{arccos ( y )}{2}

Substitute

y = θ

\frac{arccos ( θ )}{2}

Graph

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Frequently Asked Questions (FAQ)

What is the inverse of cos(2θ) ?
The inverse of cos(2θ) is (arccos(θ))/2