Hi there!
To solve, we must use the following trig identity:
sin(u - v) = sin(u)cos(v) - sin(v)cos(u)
We can rewrite the left hand side of the equation as:

Split the fraction:

First fraction reduces to 1:

Simpify each with common arguments:

Answer:
63/50 as an improper fraction.
1 13/50 as a mixed number
Step-by-step explanation:
(3x10^8) x 8 = 2400000000
OR 2.4x10^9
Answer:
$1.15
Step-by-step explanation:
0.05 × 23 = 1.15
hope this helps