ShmoopTube
Where Monty Python meets your 10th grade teacher.
Search Thousands of Shmoop Videos
Right Triangles and Trigonometry Videos 37 videos
Verifying trig identities is important, especially when you're about to let one of them into the country—which is why they should keep their pass...
Mosquitos need their caffeine, just like the rest of us. Wouldn't think zipping around and stinging people all day long sap your energy?
Sine is the opposite over the hypotenuse; cosine is the adjacent over the hypotenuse; and tangent is the opposite side over the adjacent side....
ACT Math 1.5 Trigonometry 254 Views
Share It!
Description:
ACT Math: Trigonometry Drill 1, Problem 5. Can you simplify the expression?
- Trigonometry / Trig graphs
- Product Type / ACT Math
- Foreign Language / Spanish Subtitled
- Foreign Language / Arabic Subtitled
- Foreign Language / Korean Subtitled
- Foreign Language / Chinese Subtitled
- Trigonometry / Values and properties of trigonometric functions
- Trigonometry / Use of trigonometric identities
Transcript
- 00:02
Here's your shmoop du jour, brought to you by Trigonometric Function Problems. Almost
- 00:08
as difficult to say as they are to solve. Simplify: cosecant of alpha over secant of alpha.
- 00:16
And here are the potential answers...
- 00:21
One quadruple layered fraction sandwich coming up!
- 00:25
Cosecant alpha is equal to one over sin alpha.
Full Transcript
- 00:28
And sec alpha equals one over cos alpha. Now our fraction looks like this: one over
- 00:36
sin alpha ALL OVER one over cos alpha.
- 00:40
Now to simplify the sandwich, we multiply one over sin alpha by the reciprocal of one
- 00:45
over cos alpha to get cos alpha over sin alpha. And since we know that cos alpha over sin
- 00:52
alpha equals cotangent alpha...
- 00:54
...we can determine that the answer is B.
- 00:57
Now we are definitely going to chow down on this thing... as soon as we can get our tongue untied...
Related 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?
Haven't you always wondered how much cardboard it takes to encase a trunk warmer for your pet elephant?
Want to figure out the area and perimeter of irregular shapes? Break them down into regular shapes. For example, a flower can be broken down into s...