Question 11 0/1 pt O 100 99 0 Details Write the sum as a product: cos (24.6t) + cos(2.8t) = For your answer, be sure to write all number in decimal format and not in fractional form. For example, 135 enter 2 - as 67.5, Question Help: ) Message instructor D Post to forum Submit Question Question 12 6 0/1 pt ) 100 99 0 Details Write the sum as a product: sin(12.6x) - sin(10.2x) = For your answer, be sure to write all number in decimal format and not in fractional form. For example, 135 enter - as 67.5, 2 Question Help: ) Message instructor D Post to forum Submit Question Question 13 6 0/1 pt O 100 # 99 0 Details Find all solutions to cos(8t) - cos(2t) = sin(5t) on 0