Cos(9pi/4) answer these please
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Given, cos(9pi/4) can be written as
= cos(2pi + pi/4)
= cos(pi/4)
= 1/root 2
= 0.7071
Hope this helps!
= cos(2pi + pi/4)
= cos(pi/4)
= 1/root 2
= 0.7071
Hope this helps!
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