The law of cosines states that, if
is the angle between sides b and c,

So, plugging our values, we have

This is equal to

Answer:
i think u missed out the missing variable
Step-by-step explanation:
Answer:
y =
x - 5
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) =( 8, - 3) and (x₂, y₂ ) = (0, - 5)
m =
=
= 
Note the line crosses the y- axis at (0, - 5 ) ⇒ c = - 5
y =
x - 5 ← equation of line
That slope appears to be 4/6 or 2/3.
The perpendicular slope will have the opposite sign and be the reciprocal.
The perpedicular slope is –3/2.