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

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