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22-03-2024
Mathematics

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Statement Justification
cot²(x/2) Given
1/tan²(x/2) cotx=1/tanx
1/(√1-cosx/1+cosx)² ♦
1/1-cosx/1+cosx Simplify
♣/◼ Multiplicative inverse

This proof shows the first five steps for verifying
cot²(x/y) = cosx+1/cosx-1

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