Answer:

Step-by-step explanation:
We know that:

And we want to find:

Remember that there is a trigonometric identity that relates the
function with the
function

Then if
this means that:

Finally:

Answer: p= -3/13
Step-by-step explanation:
-10+26p=-16
+10 +10
26p =-6
26 26
p= -3/13