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whatis thisin tnig onom |
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Answer» Theta (θ) andphi(ϕ) are two Greek symbols and are generally used as variables for denoting angles( in any coordinate system) Common Greek symbols like α, β, γ , θ and ϕ are frequently used to denote angle in coordinate sysytems and they are just arbitrarily chosen...Infact any alphabet like a, b, c, etc can be used. |
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