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What is the exact value of cos 45° as found on the unit circle?

What is the exact value of cos 45° as found on the unit circle?
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What is the exact value of cos 45° as found on the unit circle?

User MisterJ
by
8.6k points

1 Answer

7 votes
The exact value of cos 45 as per the special triangle would be

Cos 45 = 1/✔️2

Rationalizing the denominator gives

✔️2/2 = 0.707.
User BIT CHEETAH
by
8.0k points
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