Complete the product to sum formula.

Step-by-step explanation:

we know that

To write the products of cosines and sines as sums, we  use the following identity, which is called product-to-sum formula:

In this problem we have

therefore

i cant see the graph

step-by-step explanation:

so a parallelogram is just like a square base times height. multiply 40 and 39 to get 1560 inches.

a triangle is base times height divided by two. so multiply 7.9 and 5 and then divide it by 2 to get 19.75inches.

the kite can be split into two separate triangles and added together to get the total area. 30 x 4 /2 which equals 60. make sure to double it for the two triangles making 120.