Section 5.8 Inverse Trigonometric Functions: Integration Formulas du u arcsin C a2 u2 a du 1 u a 2 u 2 a arctan a C u du 1 arc sec C u u2 a2 a a How do you determine if you are dealing with arcsinu or arcsecu? Don’t key on whether or not there is a u outside the radical in the denominator. Instead look at whether the u squared term is being added or subtracted in the radicand. Standard “Tricks of the Trade” If at first, the integral doesn’t fit one of your forms, you might try: 1) Separating the numerator (See #18) 2) Completing the square (See #34)