The given identity sin(x+ y) - sin (x- y) = 2 cos x sin y has been verified
The identity is
sin(x+ y) - sin (x- y) = 2 cos x sin y
Here we have to use the trigonometric function
Consider the right hand side of the equation
We know
sin (x+ y) = sin x cos y + cos x sin y
sin (x-y) = sin x cos y - cos x sin y
Then
sin(x+ y) - sin (x- y) = sin x cos y + cos x sin y - (sin x cos y - cos x sin y)
= sin x cos y + cos x sin y - sin x cos y + cos x sin y
Eliminate the terms
= cos x sin y + cos x sin y
= 2 cos x sin y
Hence, the given identity sin(x+ y) - sin (x- y) = 2 cos x sin y has been verified
Learn more about trigonometric function here
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Let x is the alternative schools
2x - 8 = 36
2x = 36 + 8
2x = 44
x =44/2
x = 22
There're 22 alternative schools
Answer:
A) It can be a line of best fit because it is closest to most data points.
Step-by-step explanation:
Recall that the line of "best fit" is the line that minimizes the distance to all plotted points. It doesn't have to go through all of the date points since they may not be perfectly aligned. It also doesn't have to go through the first and last points either.
H(3)= -19
Reasoning:
Since x = 3 all you have to do is substitute all the X’s in the equation for the pre then you multiple -4 and 3 coming to -12 then you subtracted 7 coming out to -19
Answer:
2.07648468018
Step-by-step explanation: