Use a double-angle formula to find the exact value of 
when 
.
Definitions:
Bullwhip Effect
A phenomenon where inaccurate or distorted information in a supply chain causes overreaction and variability in orders, often leading to inefficiency and excess inventory.
Weighted Total
A calculated total in which different components are given different levels of importance or weight, often used in assessments or decision-making processes.
Lot Size
Refers to the set quantity of items that are processed, ordered, or produced together at a time.
Categories Score
refers to the rating or evaluation assigned to various categories within a framework, often used to assess performance or quality.
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