Please help with calculus 2 hw. This problem is broken into parts for guidance.

1.) Evaluate the integral Using Trigonometric Substitution dx * V x2_ 4 Use the substitution x= asecA and the indentity tan A = sec. 0 - 1. a . First, write down your substitutions : X = dx = b. Now plug in your substitutions and integrate with respect to O. C. Finally, express your answer in terms of x instead of O. you must draw the Triangle and label its sides write your final answer here