owlet
  • owlet
Is cos(-x) = cos x? why? I'm confused.
Mathematics
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owlet
  • owlet
Is cos(-x) = cos x? why? I'm confused.
Mathematics
chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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owlet
  • owlet
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owlet
  • owlet
oh is it because of the graph? symmetrical to the y-axis then sin x is odd because it is symmetrical to the origin?
freckles
  • freckles
cos(x) is an even function f(-x)=f(x) means f is an even function what even function is that it is symmetrical about the y-axis this means the graph can be founded about the line that is called the y-axis and see half the graph lay perfectly over the other half

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freckles
  • freckles
and yes sin(x) is odd so sin(-x)=-sin(x)
owlet
  • owlet
thank you!

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