There is a sales tax of $21 on an item that cost $217 before tax. A second item.cost $93 before tax.What is the sales tax on the
1 answer:
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9514 1404 393
Answer:
(0, π/4] ∪ (π, 5π/4]
Step-by-step explanation:
Multiplying by 2 gives ...
cot(x) ≥ 1
The cotangent function decreases from ∞ to 1 in the domain (0, π/4], and again in the domain (π, 5π/4]. The solution is the union of these two intervals.
x ∈ (0, π/4] ∪ (π, 5π/4]
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(a, b] is interval notation for a < x ≤ b
