Please explain the method of integrating trigonometric functions which have a power to them like cos54 (x). I have heard that only even powered trig functions have a method for solving them. For odd powered trig functions you have to break them down into a product like to integrate cos3 (x). You will write cos(x) times cos2(x) And use the formula of integration by parts. Is that correct?
And what about trig functions with a power positive but less than one like cos0.8(x).
What about trig functions like cos2.8(x) .