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finding maximum angle and managing data

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jessica
jessica 2013-7-12
h=130;
H=50;
i=1;
x=30:0.5:300;
AC=sqrt(x.^2+(h+H)^2);
AB=sqrt(x.^2+(h)^2);
th=acos((AB.^2+AC.^2-H^2)./(2*AB.*AC));
[thMax n]=max(th);
xthMax=x(n);
fprintf('Distance is %6.3ft at Maximum angle %6.3 deg\n',xthMax,thMax)
Hi , I have done this so far but now I get this
Distance is 153.000t at Maximum angle Distance is 153.000t at Maximum angle 0.162 deg how can I take away the repetition of the Distance and the angle is not 0.162 deg it should be 9.282 according to my calculations , do you see anything wrong thanks for the feedback >>

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Matt J
Matt J 2013-7-12
编辑：Matt J 2013-7-12
Use acosd() if you want the result in degrees instead of radians.
I don't see the repetition you mention when I run your code, but make sure that xthMax and thMax are scalars.
  2 个评论
Matt J
Matt J 2013-7-12
And your fprintf call should probably look like this
fprintf('Distance is %6.3f at Maximum angle %6.3f deg\n',xthMax,thMax)

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