Answer:
C
Step-by-step explanation:
Using sum/difference to product identity
• sin x - sin y = 2 cos(
) sin (
)
with x = 4Θ and y = 2Θ
Then
sin(4Θ) - sin(2Θ)
= 2 cos(
) sin(
)
= 2cos(3Θ)sinΘ → C
You can solve all of these by using the distance formula. I have shared it below.
Oh all you do is however many numbers in the chart are the same. on the line put how many of each of them. like since there are three 7.5 in the 7.5 place you put how many there were.