Question

Please help!! Thank you

Answer 1

(4) -1

Explanation:

f(pi/2) = 2(pi/2) =pi

g(f(pi/2)) = g(pi) = cos(pi) = -1

Answer 2

-1

Explanation:

f(pi/2) = 2(pi/2) = pi

g(f(pi/2)) = g( pi) = cos (pi) = -1