# Calculator result and MATLAB result are different

4 views (last 30 days)
Irem ERSIN on 9 Jan 2022
Edited: John D'Errico on 9 Jan 2022
%% Question 1 - Step 1
CBT = [cos(24) -sin(24) 0 779 ; sin(24) cos(24) 0 599 ; 0 0 1 0 ; 0 0 0 1] % The definition of frame {C} in {B}
CP = [100 ; 100 ; 0 ; 1]; % Given position
BP = CBT*CP % Position of P in frame {B}

Irem ERSIN on 9 Jan 2022
I understood the problem. When calculating on MATLAB, the angles are in radians, so I need to convert to degree.

Alan Stevens on 9 Jan 2022
Have you checked that both are using degrees, or both radians? The Matlab as you've written it is using radians (use sind(24) and cosd(24) if the 24 is in degrees).
John D'Errico on 9 Jan 2022
Edited: John D'Errico on 9 Jan 2022
+1. And it would be rather surprising to me if one truly intended to compute the sin(24), where the 24 was in RADIANS. 24 radians is a relatively large number of radians, and an integer stongly suggests degrees were intended.

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