Obj-C Calculator - Radians to Degrees

Question

I\'ve been watching the Stanford CS193P lectures and I\'ve been working on the assignment calculator. I got through the first assignment fairly easily, and I\'m trying to do the

Answer 1

Did you try

sin( operand ) / 180.0 * M_PI

Answer 2

Did you perhaps mean operand = sin(operand * M_PI / 180);?

Answer 3

Where did you define operand?

Are you sure that operand is a CGFloat and not a memory address?

How are you formatting your output? If you are using %e it will output in scientific notation...try doing %f

Answer 4

operand = sin(operand * (M_PI/180));

Answer 5

Try this - It works for me:

    if ([operation isEqual:@"sin"])
    {
        operand = (operand * M_PI/180); // first convert the operand from radians to degrees then perform the operation
        operand = sin(operand);
    }

Hope this helps