If and then find the value of Cos2A
Question
If and then find the value of Cos2A
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Solution
It seems like you forgot to provide the values for A or any other related information. The formula for Cos2A in terms of cosines is Cos2A = 2cos²A - 1. But without the value of A or cosA, it's impossible to find the value of Cos2A. Please provide the necessary values.
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