I need help withe equation

/in /by

I need help withe equation

Suppose 

f(π/3) = 3 and f ‘(π/3) = −7,

 and let 

g(x) = f(x) sin x

 and 

h(x) = (cos x)/f(x).

 Find the following.

(a)

g'(π/3)


 

(b)

h'(π/3)