\cos^{-1}\left(\frac{8}{5\sqrt{5}}\right)

asked by guest
on Oct 22, 2024 at 7:54 am



You asked:

Evaluate the expression: \(\arccos\left( \frac{8}{5 \cdot \sqrt{5}} \right)\)

MathBot Answer:

\[\arccos\left( \frac{8}{5 \cdot \sqrt{5}} \right) = \arccos{\left(\frac{8 \sqrt{5}}{25} \right)} \approx 0.77339701109874749287272091694922\]

\[\begin{aligned}\arccos\left( \frac{8}{5 \cdot \sqrt{5}} \right)& = \arccos{\left(8 \cdot \frac{1}{5 \cdot \sqrt{5}} \right)}\\& = \arccos{\left(\frac{8}{25} \cdot \sqrt{5} \right)}\end{aligned}\]

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