HOW TO IMPORT MATLAB DATA FROM Text files (* .txt)

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Hello good day.
I have a text file with 8 columns.
I have a file in Matlab.
I want Matlab to take only the third column, then multiply it with a variable that is in the Matlab file.
How do I achieve this?
Greetings and thanks
TEXT FILE each column has 180 values
Elev. [deg.] Azim. [deg.] Abs(Gain)[ ] Abs(Cross)[ ] Phase(Cross)[deg.] Abs(Copol)[ ] Phase(Copol)[deg.] Ax.Ratio[ ]
------------------------------------------------------------------------------------------------------------------------------------------------------
-90.000 0.000 1.336e-01 8.497e-02 303.859 4.863e-02 312.490 1.378e+01
-89.000 0.000 1.340e-01 8.535e-02 301.531 4.867e-02 312.418 1.092e+01
-88.000 0.000 1.350e-01 8.632e-02 299.208 4.872e-02 312.284 9.094e+00
-87.000 0.000 1.367e-01 8.792e-02 296.909 4.876e-02 312.087 7.846e+00
-86.000 0.000 1.390e-01 9.016e-02 294.655 4.880e-02 311.826 6.952e+00
-85.000 0.000 1.419e-01 9.305e-02 292.465 4.883e-02 311.503 6.294e+00
Matlab file code example
AFSC=(C1*exp(((i*k*x1)*sin(TETA).*cos(PHI)))
How I multiply the third column in text file to the code in Matlab ???

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