Credit Wintermester&Spring2... Home D Question 17 5 pts Concourse Syllabus Announcements Express the sum as a product of sines and/or cosines: cos 28 + cos 3B. Modules O None of these. Grades 17 O 7 (cos B + cos 5B) MyLab and Mastering O 2 sin 2 cos APCAA Tutoring O cos 5B APCAA Tutoring O 2 cos , Cos ? D Question 18 5 pts Find the area of the oblique triangle below. Round your answer to two decimal places. B a = 7 C = 4 b = 9 A None of these.MyLab and Mastering APCAA Tutoring D Question 14 5 pts APCAA Tutoring Find the exact value of sin 2u given that cos u = -= and T