. Content Connections Trigonometric Identities and Their Applications Objective To learn to create trigonometric Identities and examine their applications. Creating Identities tuna + tan}? Let's prove the addition identity tan (a + ,8) = 14mm tan}? sin( ) Step 1: Change the right-hand side to tan (a + B) = by lling in the brackets. cos ( Step 2: Use your sum of angles identity formula to change the numerator and denominator of the right-hand side. Step 3: This should leave you with two terms in the numerator and two terms in the numerator. Divide all fourterms by \" 05a cos \" under each of the four terms. Step 4: Simplify each of the four terms separately. What do you end up with? 9:32