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if cos 45°=1/root2, find the exact value of a.cos 315° b.sin 270° c. sin 210°...

if cos 45°=1/root2, find the exact value of
a.cos 315°
b.sin 270°
c. sin 210°
d. tan 210°?
In Aminu Dabo College of Health Sciences and Technology
1 Answers Available
Asked by Deborah on 7th May, 2022
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