page 237 chapter 11 exercise 4

[willc2]

end of exercise 4, the lines:

Code: (Objective-C)

-(double) sin;
-(double) cos;
-(double) tan;

should be:

Code: (Objective-C)

-(double) sin: (double) value;
-(double) cos: (double) value;
-(double) tan: (double) value;

No, these methods perform their operation on the contents of the accumulator, so it's correct as is --SK