answersLogoWhite

0

You can look up "trigonometric identities" in Wikipedia.Cos(2x), among other things, is equal to (cos x)^2 - (sin x)^2

If you meant cos squared x, or (cos x)^2, that is equal to (1 + cos(2x))/2

User Avatar

Wiki User

7y ago

Still curious? Ask our experts.

Chat with our AI personalities

RafaRafa
There's no fun in playing it safe. Why not try something a little unhinged?
Chat with Rafa
CoachCoach
Success isn't just about winning—it's about vision, patience, and playing the long game.
Chat with Coach
EzraEzra
Faith is not about having all the answers, but learning to ask the right questions.
Chat with Ezra
More answers

cos2x = cos2x - sin2x

User Avatar

Wiki User

7y ago
User Avatar

Add your answer:

Earn +20 pts
Q: What is cos2x equal to?
Write your answer...
Submit
Still have questions?
magnify glass
imp