GyanC509494 GyanC509494

03-11-2022
Mathematics

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Need shown the formula then I'm good!Find without using a calculator

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StevieL662959 StevieL662959

03-11-2022

2pi = 360 degrees

pi = 360/2 = 180 degrees

thus, Cos pi/6 = Cos 180/6

= Cos 30

Considering special angles,

[tex]\text{Cos 30 = }\frac{\sqrt[]{3}}{2}[/tex]

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