How do I rewrite sin^4cos^4 in terms of cos using power reduction formula? I keep oscillating between double angle formula and power reduction formula and the numbers get bigger and bigger!

Question

zepdrix · Answer

Hey there!
$\Large \color{royalblue}{\text{Welcome to OpenStudy! :)}}$

Do you mean the `Cosine Power Reduction Formula` for dealing with the integral of powers of cosine?

Or is this just an identity type thing? Mashing them all down to cosines?

anonymous · Answer

Just an identity type thing- using the powers reduction formula to put the equation into cos