Verify the identity. Show your work.
cos(α - β) - cos(α + β) = 2 sin α sin β
1 answer:
Cos (a-b) = cos(a)cos(b) + sin(a)sin(b)
cos (a+b) = cos(a)cos(b) - sin(a)sin(b)
so, cos(a-b) - cos(a+b) =
=cos(a)cos(b) + sin(a)sin(b) - [cos(a)cos(b) - sin(a)sin(b)]
=2sin(a)sin(b)
You might be interested in
Answer:
x = -6
Step-by-step explanation:
3x-6+4=-20
Combine like terms
3x -2 = -20
Add 2 to each side
3x-2+2 = -20 +2
3x = -18
Divide each side by 3
3x/3 = -18/3
x = -6
The function is modulus cause the range of function consists of non-negative numbers with the same magnitude.so the second one is the answer
Answer: 10 ft (now i’m just typing to make it 20 letters long lol)
Answer:
Both r same
Step-by-step explanation:
15*9=9*15
It equals 1 1/6 + d.
In other words, one and one sixth plus d.