Calculating point on a circle's circumference from angle in C#?

Question

I imagine that this is a simple question, but I\'m getting some strange results with my current code and I don\'t have the math background to fully understand why. My goal

Answer 1

-(NSMutableArray *)GetPointsForCircle
    {
       NSMutableArray *Points = [[NSMutableArray alloc] init];
       CGPoint CenterPoint = CGPointMake(160, 230);
       CGPoint Point;
       for (float Angel = 0; Angel <= 360; Angel+= 60)
         {
           Point.x = CenterPoint.x + 100 * cos(Angel);
           Point.y = CenterPoint.y + 100 * sin(Angel);
           [Points addObject:[NSValue valueWithCGPoint:Point]];
         }
       return Points;
    }

    - (CGPoint)pointOnCircle:(int)thisPoint withTotalPointCount:(int)totalPoints
     {
        CGPoint centerPoint = CGPointMake(self.view.frame.size.width / 2, self.view.frame.size.height / 2);
        float radius = 100.0;
        float angle = ( 2 * M_PI / (float)totalPoints ) * (float)thisPoint;
        CGPoint newPoint;
        newPoint.x = (centerPoint.x) + (radius * cosf(angle));
        newPoint.y = (centerPoint.y) + (radius * sinf(angle));
        return newPoint;   
    }