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Compute \[ \sin^2 5^\circ + \sin^2 10^\circ + \sin^2 15^\circ + \cdots + \sin^2 90^\circ =\, ? \]

 Feb 5, 2021
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  \(Compute\ \sin^2 5^\circ + \sin^2 10^\circ + \sin^2 15^\circ + \cdots + \sin^2 90^\circ =\, ? \)

 

Hello Guest!

 

\(\sin^2 5^\circ + \sin^2 10^\circ + \sin^2 15^\circ + \cdots + \sin^2 90^\circ =\color{blue}9.5 \)

laugh  !

\(\)

 Feb 5, 2021

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