altes2017 altes2017

31-05-2022
Mathematics

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What is the Trigonometric ratio of cos180?

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loneguy loneguy

31-05-2022

[tex]\cos 180^{\circ}\\\\=\cos(2 \cdot 90^{\circ})\\\\=2 \cos^2 90^{\circ}-1\\\\=2 \cdot 0 - 1\\\\=0-1\\\\=-1[/tex]

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