which of the following pairs of functions have identical x-intercepts?
(a) f(x)= sinx,f(x)=tan x
(b) f(x)=cos x,f(x) = sin x
(c) f(x)=sin x ,f(x)= csc x
(d) f(x) = tan x, f(x) = cos x
explain which one is right
+38 
