anonymous
  • anonymous
transform cos 38x to functions of 19x
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
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.
jamiebookeater
  • jamiebookeater
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
have you heard of the trig identy cos(a+b)=cos(a)cos(b)+sin(a)sin(b)? because cos(38x) can be the same as cos(19x+19x) and so a=19x and b=19x
anonymous
  • anonymous
I Have not heard of that but it makes sense to me. Would that also work to make it a function of 76x?
anonymous
  • anonymous
\[cos(2x)=1-sin^2(x)\]

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

anonymous
  • anonymous
so \[cos(76x)=1-sin^2(38x)\]
anonymous
  • anonymous
btw calcstud shows how to derive the formula i wrote.
anonymous
  • anonymous
thank you!

Looking for something else?

Not the answer you are looking for? Search for more explanations.