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Trigonometry Videos 25 videos
ACT Math Trigonometry Drill 1, Problem 2. Can you find the tangent?
ACT Math: Trigonometry Drill 4, Problem 3. What is the length of side b?
ACT Math: Trigonometry Drill 4, Problem 4. What is the equation of the graph in the video?
ACT Math 1.5 Trigonometry 254 Views
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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...
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