cos(a - b) - cos(a + b) = 2sin(a)sin(b)
[cos(a)cos(b) + sin(a)sin(b)] - [cos(a)cos(b) - sin(a)sin(b)] = 2sin(a)sin(b)
[cos(a)cos(b) - cos(a)cos(b)] + [sin(a)sin(b) + sin(a)sin(b)] = 2sin(a)sin(b)
2sin(a)sin(b) = 2sin(a)sin(b)
Answer:
Step-by-step explanation:
a 1296
F(x) = -5x - 8, find F(6)
f(6) = -5(6) - 8
f(6) = -30 - 8
f(6) = -38
Answer:
A) A
Step-by-step explanation:
The square root of 7 is just over two and a half.
