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Right Triangles and Trigonometry Videos 37 videos
Mosquitos need their caffeine, just like the rest of us. Wouldn't think zipping around and stinging people all day long sap your energy?
ACT Math Trigonometry Drill 1, Problem 2. Can you find the tangent?
ACT Math: Trigonometry Drill 1, Problem 3. Can you find the cosine?
ACT Math 3.4 Trigonometry 218 Views
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Description:
ACT Math: Trigonometry Drill 3, Problem 4. Which of the following answer choices is true?
- Trigonometry / Trig identities
- Product Type / ACT Math
- Foreign Language / Arabic Subtitled
- Foreign Language / Korean Subtitled
- Foreign Language / Spanish 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 Shortcuts. Pay no attention to the glowing
- 00:08
eyes. This way is definitely quicker. Which of the following answer choices is true?
- 00:18
Well sorry if you were looking for a shortcut to the answer to this problem...there really isn't one...
- 00:23
We just have to know our trig identities,
- 00:25
So let's start with A. Sin alpha equals 1
Full Transcript
- 00:30
over cosecant alpha. Remember that cosecant is the reciprocal of
- 00:36
sine. So sin alpha equals 1 over cosecant alpha. This one's true.
- 00:43
Answer choice B...secant equals 1 over cosine yup. Secant is the reciprocal of cosine. Check!
- 00:50
Ok, last one. Tangent alpha equals sin alpha over cosine alpha. Again, we just have to
- 00:57
know it but yeah, this one works, too.
- 01:00
Because A, B, and C are all correct. Answer choice E is the one we want.
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