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ACT Math Videos 164 videos
ACT Math: Coordinate Geometry Drill 1, Problem 1. Which inequality is expressed by the number line?
ACT Math: Intermediate Algebra: Drill 3, Problem 1. Find the fifth number in the series.
ACT Math: Plane Geometry Drill 3, Problem 1. What is the area of the trapezoid shape in the video?
ACT Math 3.3 Trigonometry 220 Views
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ACT Math: Trigonometry Drill 3, Problem 3. Can you find the sine?
ACT Math: Trigonometry Drill 3, Problem 3. Can you find the sine?
Transcript
- 00:02
Here's another shmoop du jour...
- 00:04
What is sin of 45 degrees equal to?
- 00:07
And here are your potential answers...
- 00:13
This one should be a no-brainer. Seriously.
- 00:14
We should have the values of the special trig functions memorized by now, and 45 degrees
Full Transcript
- 00:20
is one of them. Sin of 45 degrees is root 2 over 2. We couldn't
- 00:25
have gotten confused with the cosine of 45 degrees either...because that value is also
- 00:30
root 2 over 2.
- 00:31
Our answer's C.
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