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27-07-2016
Mathematics

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Cos^2 75degrees-sin^2 75 degrees

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Panoyin Panoyin

27-07-2016

[tex]cos(150\°)[/tex]
[tex]cos(2(75\°))[/tex]
[tex]cos^{2}(75\°) - sin^{2}(75\°)[/tex]
[tex]1 - 2sin^{2}(75\°)[/tex]
[tex]2cos^{2}(75\°) - 1[/tex]

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