.2) Using the fact that 75=2 x 60-45, compute cos(5π/12) and write the answer in its most simplified form.

Use for

and for

then just plug in the standard values.

Right. The domain is obviously the set of all real numbers. That's what you got. But the range is not the3) If f(x)=e^(x+1) and g(x)=x^(2)+1, what is the range of the composite function f(g(x))?I think I might know what I'm doing here. f(g(x)) --> f(x^(2)+1) = e^(x+1) = e^(x^(2)+1)+1

set of all real numbers. We have [tex]f(g(x)) = e^{x^2+2}[/tex]. If , . If is positive, then

. If is negative, then again . I think the range of the function is clear then.