Question 10 B017 pts 2 Details (1) 1) Evaluate cos " xde. Hint Express cosz in terms of sin a. Then use the substitution u = sin 2, Back substitute to write your soluton in terms of a solution ]+C (2) Evaluate cos? wdz. . Hint: Use the half-angle identity cos x = 2014 (1 + cos2x). solution = + C