Chapter 13.2, Problem 5WE

To determine

To find: The function is odd, even, or neither.

Answer to Problem 5WE

The function is $=0.2553$ .

Explanation of Solution

Given graph:

  

Calculation:

Let use a calculator to find the value.

Set the calculator in radian mode. We have to find the sine of the given number.

Press the key $\boxed{\sin }$ , and enter the number $0.25$ . The display will be $0.24740396$ .

Approximate the value to four decimal places.

  $0.24740396=0.2474$

To find the cosine of $0.25$ .

Press the key $\boxed{\cos }$ , and enter the number $0.25$ . The display will be $0.96891242$ .

Approximate the value to four decimal places.

  $0.96891242=0.9690$

Similarly, find the tangent of $0.25$ .

  $\begin{array}{c}\tan 0.25=0.25534192\\ =0.2553\end{array}$

Therefore, we found the sine, cosine, and tangent of the given number.