tan α = (1)/(x) అయితే, sin α + cos α విలువను కనుగొనండి.

1
\((1+x)/√(1+x^2)\)
2
\(2x/(1+x^2)\)
3
\((1-x^2)/(1+x^2)\)
4
\((1-x)/(1+x^2)\)

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