alleryBesides sine, cosine and tangent, how many more functions are there?
ANine
BSeven
CTwelve
DThree
Answer & Solution
Correct answer: D. Three
1. The three basic ratios each have a partner.
2. Those partners are the reciprocals.
3. In addition to sine, cosine, and tangent, there are three more functions.
4. So the answer is three.
_Source: OpenStax 'Algebra and Trigonometry 2e', Ch 7 'The Unit Circle: Sine and Cosine Functions'_
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