sin() - Subscript indices must either be real positive integers or logicals.

worked fine before, trying to debug - got the error only for the sin() parts

(sin(7 * pi / 8)^2) 
((sin (7 * pi / 8)) ^ 2)


%2.calculate a)
disp('2. a)');
ans_2a = (cos (5 * pi / 6))^2 * (sin(7 * pi / 8)^2) + (((tan (pi / 6 * log(8)))));
disp(ans_2a);
%ans2 = 2.6285

%2.calculate b)
disp('2. b)');
ans2_b = (cos((5 * pi / 6) ^ 2)) * ((sin (7 * pi / 8)) ^ 2) + ((tan (pi * log(8) / 6) / (7 * (5 / 2))));
disp(ans2_b);
%ans2_b = 0.2325

[James Tursa]

Look in your code where you are creating a variable named "sin" and rename it to something else so it doesn't shadow the MATLAB function sin( ).

[Sherelin Fridkin]

Thank you

Answer 1

[madhan ravi]

clear sin % since it's a variable

[Sherelin Fridkin]

Thank you