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    with fx=cosx
    and gx= x+90
    find fg(x)
    and it's domain and range
    HOW DO U DO THAT

    so fg(x)= cos (x+90)
    but i'm stuck with the domain and range.
    apparently:

    ans=
    domain= 0<x<90
    range=
    f(x)> or = -1
    and
    less than or equal to 0.

    HOW?
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    will fg(x) 's domain or range
    have anything to do with
    their respective domain and range?
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    (Original post by zomgleh)
    will fg(x) 's domain or range
    have anything to do with
    their respective domain and range?

    is there any more information in the question?
 
 
 
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