5
Let cos x =
with x in QIV and find the following.
cos 2x

21.4 i did it already for s1

step-by-step explanation:

1     sepan

2     encuentren

3     tenga

4     hable

5   parezca

6   llegue

step-by-step explanation:

mean or average is 40.6

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c