To integrate Jo V1 - x2 dx, which trigonometric substitution will be appropriate? O x = sin 0, dx = cos 0 de O x = tan0, dx = sec2 0 de O x = sec0, dx = sec 0 tan 0 deWhich Pythagorean Identity will we need when we use trig substitution to integrate ( V1 - x2 dac? O 1 - tan2 0 = sec2 0 O 1 - sin2 0 = cos2 0 O 1 - csc2 0 = cot2 0