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DLMF:31.16#Ex3 - MaRDI portal

DLMF:31.16#Ex3 (Q9827)

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DLMF:31.16#Ex3
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    ( x - a ) ( y - a ) = a ( a - 1 ) cos 2 θ . 𝑥 𝑎 𝑦 𝑎 𝑎 𝑎 1 2 𝜃 {\displaystyle{\displaystyle(x-a)(y-a)=a(a-1){\cos^{2}}\theta.}}
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