Explain how to find the value of \cos(-45^{\circ}) using even-odd properties.

FizeauV 2021-08-17 Answered
Explain how to find the value of cos(45) using even-odd properties.
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Expert Answer

Malena
Answered 2021-08-18 Author has 83 answers
Step 1
We know the even property that
f(x)=f(x)
And we know that cos is an even function so, 1) cos(45)=cos(45)
Step 2
We know the value of cos(45)=12.
Hence the value of cos(45)=12 from equation(1).
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