Find using matlab:
You can use symbollic math to make it easier if you'd like. And please keep in mind to create all of this in ONE GRAPH and not subplots as shown in the picture. Mind the interval as well since lambda is supposed to be not equal to 0 and 90. Please make sure the code works and is showing the plot that's in the question before submitting. Otherwise I will downvote if its not the same^

The efficiency, in percent, of a power screw when the friction of the collar is ignored, is given by the following equation: e = 100 - cos(a) tan(A) cos(a) +cot(A) % where u is the coefficient of friction, is the lead angle of the screw, and a is the thread angle. Plot the efficiency e (on the y-axis) versus the lead angle 2 (on the x-axis), for the following values: - - - 0 <