calculate acos(sqrt(2)/2)

Let's calculate:

acos (\frac{\sqrt{2}}{2})

ⓘ acos, asin and atan give the principal angle whose cosine, sine or tangent respectively equals the number, here a remarkable value:

acos (\frac{\sqrt{2}}{2})

=

\frac{π}{4}

▶Result:

\frac{π}{4}

The numeric value of:

\frac{π}{4}

equals:

\frac{\approx 3.1416}{4}

▷

\approx 0.7854

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