Question: plotting two equation continuously

Dear All,

Kindly help me plotting the following equation:

beta = 0.25

alpha0 = 0.2580   or 15 degrees

alphad = 0.545    or  31 degrees

Bmax = 0.7

alpha = 0 to Pi/2

B(alpha) = (1-beta-beta*cos((Pi*alpha)/(0.8*alpha0)))*Bmax      for interval     0<alpha<0.8*alpha0

B(alpha) = Bmax                                                                      for interval     0.8*alpha0<alpha<alphad

Please help in plotting both equation at same time.

Looking forward to kind replies

Regards

A.Q

 

 

 

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