If cos ∅ lies in the quadrant IV, what can be the value of cos ∅?
2 answers:
Answer:
3/5
Step-by-step explanation:
The range of the cosine function is [-1, 1]. Since √41/5 is greater than 1, we eliminate answers a) and b) immediately.
If this angle lies in Quadrant IV, the "adjacent side" is positive. Thus, the cosine of this angle must be 3/5.
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Step-by-step explanation:
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