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If 0<θ,ϕ<π2,x=∞∑n=0cos2nθ,y=∞∑n=0sin2nϕ and z=∞∑n=0cos2nθ⋅sin2nϕ then : |
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Answer» If 0<θ,ϕ<π2,x=∞∑n=0cos2nθ,y=∞∑n=0sin2nϕ and |
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