Given that
f
(
x
)
=
x
2
−
16
x
+
63
f(x)=x
2
−16x+63 and
g
(
x
)
=
x
−
7
g(x)=x−7, find
(
f
÷
g
)
(
x
)
(f÷g)(x) and express the result in standard form.

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b