- #1
hungryhippo
- 10
- 0
Homework Statement
Integrate
1/sqrt(cos[2x]) from theta prime to pi/4
Homework Equations
Your basic trig identities:
cos[2x]= 2cos^2[x]-1 = 1- 2sin^2[x] = cos^2[x]-sin^2[x]
sin^2[x]+cos^2[x] = 1
sin[2x] = 2sin[x]cos[x]
Apparently, you're supose to manipulate so that you can do a substitution to eliminate all trigonometric terms, i.e. cosx, sinx, and whatever may come up. Then, since a substitution occurred, you can then change the bounds of integration.
It should be similar to integrating 1/cosx by manipulation and substitution.
The Attempt at a Solution
Well, the first thing for me was trying to get rid of the square root in the denominator, multiplying top and bottom by cos[2x] everything i seem to have done thus far, ends up going in circles...
Last edited: