√(cos^2 20)

asked by guest
on Nov 19, 2024 at 4:28 am



You asked:

Evaluate the expression: \(\sqrt{{\cos\left( 20 \right)}^{2}}\)

MathBot Answer:

\[\sqrt{{\cos\left( 20 \right)}^{2}} = \cos{\left(20 \right)} \approx 0.40808206181339198606226786092764\]

\[\begin{aligned}\sqrt{{\cos\left( 20 \right)}^{2}}& = \sqrt{\cos^{2}{\left(20 \right)}}\\& = \cos{\left(20 \right)}\end{aligned}\]

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