Re: Trig functions with small angles Message #4 Posted by J. Lopez on 22 Mar 2001, 5:11 p.m., in response to message #1 by Jim
Well, last night I compared the results of calculating the sine of small angles (in radians) in my HP33C and an HP49G. For angles less than 8.72664626 E2 (approx 5 degrees), the difference between the two calculators was in the order of 2 E12, which I don't think is significant.
Incidentally, for this angle, .087266 radians, the sine is .087156. These values tend to be closer together as the angle decreases. For example, when the angle is 3.49066 E2 (approx 2 degrees), the sine is 3.48995 E2 and when the angle is 1.74533 E2 (approx. 1 degree), the sine is 1.74524 E2.
The results given by a TI92 Plus calculator showed better precision (typically one more digit than the HP49G).
