Write the product as a sum: 18 cos(25v)cos(6v)

Q: Write the sum as a product: sin(14.7r)−sin(2.9r)=

A: Write the sum as a product:sin(14.7r)−sin(2.9r)=

Q: Write the product as a sum: 20 sin(23u)sin(9v)

A:

Q: Write the sum as a product: cos(10.9t) – cos(6.5t) =

A:

Q: Write the sum as a product: sin(20.2b)−sin(6.4b)=

A: Recall: sin(C)-sin(D)=2 cosC+D2 sinC-D2

Q: Write the sum as a product: cos(12.7z) + cos(3.5z)

A: formula :

Q: Write the sum as a product: cos(15.5æ) + cos(10.3x)

A:

Q: 12

A:

Q: Write the sum as a product: cos(20.82) – cos(10.62)

A: Given expression is: cos(20.8z)-cos(10.6z) Find the sum as a product. Here we use the formula:…

Q: Write the sum as a produc sin(5.2r) – sin(3.6r)

A: Givensin(5.2 r)-sin(3.6r)

Q: Write the product as a sum: 20 sin(17v)sin(15v) =

A: Write the formula of 2sinAsinB=cos(A-B)-cos(A+B). And solution is given below in the image.

Q: Write the sum as a product: cos(21.6r)−cos(12.2r)=

A:

Q: Write the product as a sum: 16 cos(36y)cos(14y)

A: 16cos(36y)cos(14y) We know, 2cos(A)cos(B)=cos(A+B)+cos(A-B)

Q: Write the product as a sum: 18cos(44z)cos(21z)

A: