Hello,

Can someone please show me all the algebraic steps for simplifying cos^4x?

The problem should be

cos^4x = ((1+cos2x)/2)((1+cos2x)/2)

thanks!

Printable View

- November 12th 2009, 03:03 PMl flipboi lLowering Powers - Simplify in terms of cosine
Hello,

Can someone please show me all the algebraic steps for simplifying cos^4x?

The problem should be

cos^4x = ((1+cos2x)/2)((1+cos2x)/2)

thanks! - November 12th 2009, 03:38 PMpickslides

Have a look at this.

Table of Trigonometric Identities - November 12th 2009, 04:29 PMl flipboi l
- November 12th 2009, 04:33 PMpickslides
You are expanding something that does not need to be expanded. You will only end up back at the start.