please calculate me 1, 2, 3, 4, 5. Please write clearly for me. Thanks.

7-48 '1 as E], 4 Safari (SE @AAQLJ Grapher 11 in 3b 12 Fri Forum Calculus II: 13 Examples of Trigonometric Integrals and Integration by Simple Fractions All lessons ( > This lesson is based on techniques of integration by sustitution developed in the previous lessons. To master it is best to do lots of examples such as the ones from the lecture and in homework. Trigonometric identities [Expand All PDF-beta . The following trigonometric identities are helpful in evaluating intergrals. 1 Even powers of sine and cosine Second powers and higher even powers of sines and cosines can be converted using this well-known formula: '3' sin2 a: + cos? n: =1. For example, / sin5 azdac = [(sin2 m)2 sin asda: