156 # 5-31 odd AP 1-4 dk ohcost = etsint e cost sshe W All = (cost - simA) ( cost - sint) - ( Sint + cost )- Slat just el (cost + sint) 4E4+t d'a # Cost + taint We Sit -tcastUn Sin & Skill Building In Problems 5-12, And 5. mercat, y(joe sint In Problems 13-26. for each pair of parametric equations (a) Find an equation of the tangent line to the canred the given number. (b) Graph the curve and the tangent Nar.\fAnswers to 5 - 11 2nd deri 5. dy 2-4costsint ' (cost - sing) 7. 9. sec 1 dx 11. tan dr