Help please!! Will give out brainliest and +20 pts (proof is in picture) Topic: calculus integrals
I had this same problem on my previous homework but now I’m getting the same question and it’s telling me that my equation is incorrect? Why is that so?

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Calculus

Derivative of trig: Integral of 1/u: Fundamental Theory of Calculus Part 1: Integral Solving Methods - u-substitution

Step-by-step explanation:

Step 1: Define

Step 2: Evaluate

Define a u:                             u = 1 + cos(x)Define du:                              du = -sin(x)dxRewrite integral:                    u-substitute:                          Change limits [a]:                 a = 1 + cos(-π/2) = 1Change limits [b]:                 b = 1 + cos(-2π/3) = 1/2Change limits:                      

Step 3: Evaluate Further

Integrate:                    FTC Part 1:                  Evaluate:                    Evaluate:                    

Google it that might work