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DLMF:19.8#Ex16 - MaRDI portal

DLMF:19.8#Ex16 (Q6926)

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DLMF:19.8#Ex16
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    2 ϕ 2 = ϕ + arcsin ( k sin ϕ ) . 2 subscript italic-ϕ 2 italic-ϕ 𝑘 italic-ϕ {\displaystyle{\displaystyle 2\phi_{2}=\phi+\operatorname{arcsin}\left(k\sin% \phi\right).}}
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