No13.
Answer:
Cos(x+x)=cosx*cosx-sinx*sinx
=cos2(x)-sin2(x)
=(cosx+sinx)(cosx-sinx)
You can use proportions in all of these as I explained in another one of your questions. I'll post the answers if you still want them.
Answer:
The equation of other line parallel to given line is y =
+ 5 .
Step-by-step explanation:
Given as :
The equation of a line is
x - 2 y = 6
Or, 2 y = x - 6
Or, y =
x - 
i.e y =
x - 3
The standard equation of line is given as
y = m x + c
where m is the slope of line
Now, comparing given line with standard line equation
The slope of line x - 2 y = 6 is m = 
<u>Again</u>
Other line is passing through point (- 2 , 4) and is parallel to given line
For parallel line condition
slope of both lines are equal
Let The slope of other line = M
So, M = m = 
<u>Again</u>
Equation of line with slope
and passing through point (-2 , 4)
y -
= M ( x -
)
i.e y - 4 = (
) ( x + 2)
Or, y - 4 =
+ 1
Or, y =
+ 1 + 4
i.e y =
+ 5
Hence, The equation of other line parallel to given line is y =
+ 5 . Answer