algebra2
posted by jeff .
I am taking an online class, and cant understand why when I calculate ona ti84 plus an answer I get decimal answer and my teachers answer is sq root, is there something I am not doing on my calculator? How do I convert.

Example, teachers answer to the following was
sin 315deg = sin 45deg = sqrt2/2
I got a decimal answer.
Respond to this Question
Similar Questions

Math help please *calculus*
ok im having a bit of a problem rationalizing denominators. i have 2 to the root of 3 +4 divided by the root of 3. I have tried multiplying the top and bottom by the root of 3 and the answer, but then i get stuck at this part. Do i … 
8th Grade AlgebraRadicals:Answer Check
Change each decimal to a fraction in lowest terms. 1) 0.4242.... Answer: 14/33 2)0.58 Answer: 29/50 3)0.14 (Repeating sign over both numbers) Answer: 14/99 Write each expression in simplest form. ( means that it is inside a square … 
8th Grade Algebra: Answer Check
Find the length of the 3rd side of each right triangle. 1. 8^2+15^2=c^2 Answer: c=17 2. 5^2+b^2=13^2 Answer: b=12 3. 9^2+13^2=c^2 Answer: c~15.81 Simplify. Assume that all variables are nonnegative. { this means square root 4. {12 … 
algebra 2
I am taking an online class, and cant understand why when I calculate ona ti84 plus an answer I get decimal answer and my teachers answer is sq root, is there something I am not doing on my calculator? 
Calculator Help
Is there a difference between TI89 Titanium calculator and TI83 calculator? 
Math
Hi,I need to know how to do question like this without using a calculator. Can anyone help please. Which of the following is closest to square root of 4000 A)40 B) 60 C) 200 D) 2000 I know the answer is B , but I did it on the calculator. … 
Math
The problem tells us to approximate the integral using the midpoint rule. n=5, sin(x)2 dx 0 to 1. I understand that the answer is .2(sin(.1)^2 + sin(.3)^...). When I use my calculator to get the decimal answer, I cannot get the same … 
TI 84 Plus
How do i get to the regression equation on the ti84 plus calculator. I am working on a math problem trying to view my equation once i plugged in the data 
math
Here's my question: Determine if each system has one, two, or no solutions. (Show your work  3 marks each) a)y=2x^22x+1 and y=3x5 b)y=x^2+3x16 and y=x^28x18 Here's my work on the question: a) x=(b plus/minus sign (square root … 
Basic Differential Equation
Hi all. I need help understanding something my book dosn't go over well. For example dy/dx=4y is a given solution and I need to find the differential equation. I simply isolate y then integrate. Getting y=e^(4x) which is correct. …