Answer:
Option A. is the correct option.
Step-by-step explanation:
We have to get the simplified form of sin (.6x)-sin(.4x)
As we know the identity sinA- sinB = 2 cos(A+B)/2.sin(A-B)/2
We apply the identity in the given expression
sin(.6x)-sin(.4x) = 2 cos(.6x + .4x)/2.sin(.6x - .4x)/2
= 2 cos(x/2).sin(0.2x/2) = 2 cos(0.5x).sin(0.1x)
Therefore option A is the correct option.
You have 1/5x and 4/5x if you add these you get 5/5x or 1x
The left side simplifies to:
x +9 > -11
Subtract 9
x > -20
Answer:
A
Step-by-step explanation:
Answer:
3 ft 9 in
Step-by-step explanation: