ACT Math 2.4 Trigonometry
ACT Math: Trigonometry Drill 2, Problem 4. Which formula does the graph in the video represent?
|Foreign Language||Arabic Subtitled|
|Functions||Model periodic phenomena with trigonometric functions|
|Geometry||Right Triangles and Trigonometry|
|Product Type||ACT Math|
|Trigonometry||Graphing trigonometric functions|
But, because it's so curvy... its period
is probably smaller than usual.
Because it is expressed by a coefficient greater than 1 in the parentheses; only answer choices
A, C, and D have that. As for its amplitude, it seems to reach 3
and negative 3, so there should be a 3 before the cos itself.
Of the three answer choices mentioned before, this is represented in choice A, which turns
out to be our answer. So it's A!