SOLUTION: How do I solve a question such as: Find the exact value. (a) cos(1/4)pi Thank you!

SOLUTION: How do I solve a question such as: Find the exact value. (a) cos(1/4)pi Thank you!

Algebra.Com

Question 798445: How do I solve a question such as:
Find the exact value.
(a) cos(1/4)pi

Thank you!
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
To get an idea where thye angle is, I
convert to degrees.
= 180 degrees
= 90 degrees
= 45 degrees
I know that the cosine of 45 degrees
is

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