# sin (e^pi) = -0.91

<p>what?</p>

<p>question is:
If f(x) = sin x and g(x) = e^x, then f(g(pi)) =
(A)-0.91
...
(C) 0.39
...</p>

<p>g(pi) is e^pi, f(x) of that is sin (e^pi) = -0.91 according to the answer key, but when i plug that in i get 0.39. What am I doing wrong?</p>

<p>Does the SAT Math II have confusing questions like this?</p>

<p>ok never mind, i understand it now</p>

<p>how do you know when to use degree mode and when to use radian mode?</p>

<p>^ because when dealing with functions, say f(x) and g(x), you are dealing with real numbers. Radians are real numbers, degrees are not.</p>

<p>Well, the problem explicitly uses pi, which is the number used in radian.</p>

<p>I've never seen/heard of the SAT asking these kind of questions.</p>

<p>This is SAT II Math II I believe.</p>

<p>must suck to forget ur calc for math II</p>

<p>I have no taken calc and i am taking Math II in a week...</p>

<p>^u dont need calc for Math II</p>

<p>if you don't need a calc for math II, the more power to you.</p>