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ACT Math Videos 164 videos

ACT Math 1.1 Pre-Algebra
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Pre-Algebra Drill 1, Problem 1. Calculate 23 + 53(7 – 4).

ACT Math 1.1 Trigonometry
355 Views

ACT Math: Trigonometry Drill 1, Problem 1. What is the length of y?

ACT Math 1.2 Coordinate Geometry
252 Views

ACT Math: Coordinate Geometry Drill 1, Problem 2. Solve the inequality and determine which solution is shown on the number line.

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ACT Math 2.3 Trigonometry 225 Views


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Description:

ACT Math: Trigonometry Drill 2, Problem 3. The graph shown represents which function?

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Transcript

00:02

And here is your shmoop du jour...

00:03

The following is a graph above which function?

00:06

Here are the answers...

00:10

Sine. Cosine. Cactus. Cot. What ever that is. The figure starts at

00:15

0 ends at 2 pi, so it's period

00:18

is 2pi...thats this thing. It goes all the way up

00:22

one and goes all the way down to -1 so it's

00:26

amplitude is 1. The options that immediately come to mind based on these

00:30

details are

00:31

A and B. Sine and Cosine. The difference though is that a normal sign graph

00:37

begins at the origin

00:38

whereas a normal cosine graph begins at point zero one.

00:43

This one looks like it's the latter...so our answer is A.

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