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Popular >

inverse of cos(2x)

Solution

inverse

cos (2 x)

Solution

\frac{arccos ( x )}{2}

Solution steps

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

2 x = arccos (y)

Solve for

x, 2 x = arccos (y)

\frac{arccos ( y )}{2}

Substitute

y = x

\frac{arccos ( x )}{2}

Popular Examples

f (θ) = tan (θ)

domain of f(x)=sqrt(6-\sqrt{6-x)}domain

f (x) = 6 - 6 - x

inverse of f(x)=2x^5+1 inverse

f (x) = 2 x^{5} + 1

domain of x^3+x^2-9x-9 domain

x^{3} + x^{2} - 9 x - 9

inflection f(x)= 2/(x+5)inflection points

f (x) = \frac{2}{x + 5}

Frequently Asked Questions (FAQ)

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