Answer: see proof below
<u>Step-by-step explanation:</u>
Use the Product to Sum Identity: cos A · cos B = [cos (A - B) + cos (A + B)]/2
Use the Odd Function Identity: cos (-A) = - cos (A)
<u>Proof LHS → RHS:</u>
= 0
LHS = RHS
Answer:
not sure but i think 64 ?
Answer:
29/7
Step-by-step explanation:
10-5x=3(x-4)-(x+7)
10-5x=3x-12-x-7
10-5x=3x-x-12-7
10-5x=2x-19
10-5x-2x=-19
10-7x=-19
7x=10-(-19)
7x=10+19
7x=29
x=29/7
A solid figure without any base and with only one curved surface is called a circle