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ACT Math: Trigonometry Drill 1, Problem 5. Can you simplify the expression?
ACT Math: Trigonometry Drill 2, Problem 1. What function is graphed in the video?
ACT Math Trigonometry Drill 2, Problem 2. Which graph represents the equation shown?
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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