Question 429903
f(x)=sin(x°)   G(x)=2x

a. Find expressions for 
(i)  f(g(x)) = sin(2x)
(ii) g(f(x)) = 2sin(x)
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b.  Solve 2f(g(x))=g(f(x))
2sin(2x) = 2sin(x)
sin(2x) = sin(x)
2sin(x)cos(x) = sin(x)
2cos(x) = 1
cos(x) = 1/2
x = 60º, 300º
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I got f(g(x))= sin2x° and g(f(x))=2sinx