What is cos 45º? See picture for more details

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asked Oct 20, 2021 125k views

3 votes

What is cos 45º?
See picture for more details

Mathematics
high-school

Heinob asked

by Heinob

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2 Answers

5 votes

Answer:

Explanation:

IPValverde answered Oct 21, 2021

by IPValverde

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2 votes

Answer:

C. 1/√2

Explanation:

cos∅ is adjacent over hypotenuse:

cos45° = 1/√2

cos45° = √2/2

Alternatively, if you learned and memorized your unit circle, cos(π/2) = √2/2

Nick Parsons answered Oct 25, 2021

by Nick Parsons

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