define the variables x=3.5 y=-2 a=-1.09 and calculate: sine of 120o in matlab

To define the variables x, y, and a with the given values, you can use the following code in MATLAB:

main.m
x = 3.5;
y = -2;
a = -1.09;
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To calculate the sine of 120 degrees in MATLAB, you can use the sind() function, which calculates the sine of an angle in degrees. Here's how you can use it:

main.m
angle = 120;
sine = sind(angle);
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The variable sine will contain the value of the sine of 120 degrees.

It's important to note that MATLAB expects angles to be specified in degrees, not radians. If you need to work with radians instead, you can use the sin() function, which operates on radians.