You should be using cos-1, the inverse cosine function.Tyrion101 said:I have a cosine calculator problem, and it keeps coming up wrong. So I figured to test it would be to do cosine of -1 which should be pi, either symbolically or numerically but it doesn't come out with either.
Tyrion101 said:It either produces cos(1) or .540302. It used to give pi as the symbol or as the number. What did I change?
Tyrion101 said:So I figured to test it would be to do cosine of -1 which should be pi
This mistake suggests a fairly serious flaw in your understanding of these trig functions. The sine and cosine functions never get above 1 or below -1, so it's not possible for the cosine of any real number to be ##\pi##.Tyrion101 said:Thanks! I'd hate to fail the course because of a stupid mistake like this!
The T-89 is a calculator that uses a numerical approximation method to calculate trigonometric functions. Therefore, it may not always give an exact value for pi or other trigonometric functions.
No, the T-89 uses a limited number of digits for calculations and cannot provide an exact value for pi. It can only give an approximation of pi based on the number of digits it can handle.
No, the T-89's calculations are still accurate within the number of digits it can handle. However, it may not provide an exact value for pi or other trigonometric functions due to its numerical approximation method.
No, the T-89 uses a built-in algorithm for calculations and does not have customizable settings for trigonometric functions. It will always provide an approximation of pi based on its numerical method.
Yes, there are other calculators and mathematical software programs that can give an exact value for pi. These include symbolic calculators and software such as Mathematica or MATLAB which use exact mathematical formulas for calculations rather than numerical approximation methods.