Use the half-angle formula to simplify the given expression. 
Definitions:
Consolidated Balance Sheet
A financial statement that combines the assets, liabilities, and equity of a parent company with its subsidiaries.
Straight-Line Method
A method of calculating depreciation of an asset by evenly spreading its cost over its useful life.
Intra-entity Gross Profit
Gross profit generated from transactions within the same corporate entity, which may require elimination during consolidation to prevent overstating earnings.
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