Question

How do you use a calculator to evaluate $\sin (0.65)$ ?

Answer 1

Hint : To evaluate the value of sine by using a calculator, the calculator must be a scientific calculator. Operating steps of the calculator depends on the calculator we use and its built-in functions. There are scientific calculators of different brands in different models. Here the scientific calculator is used.

Complete step-by-step answer :
It is very simple to find the values of a trigonometric function by using a scientific calculator. Simply turn on the calculator. In the calculator you can see a button with the name “sin”, simply press the sin button and enter the value to find, here the value needed to find is $0.65$, we can see that the equation will display on the screen as $\sin {\text{ }}(0.65)$. Then press the equal to button. The value of $\sin (0.65)$ displays as $0.011344396$.
Thus we got the value that $\sin (0.65) = 0.0113$. This value cannot be easily determined manually.
In some calculators there will not be a separate button for sine. In such a case just explore the calculator to find sin. It may appear on top of any button in such case press the shift key first and then press that button where you find sine. Now the display screen will show that the sin function has come into the action.
So, the correct answer is “0.0113”.

Note : The usage of a calculator completely depends on the model we use. Before using the calculator it becomes necessary that one should know about the calculator they are using. One should be aware of how to operate the calculator and what functions are there and how to use it. The higher class students can use scientific calculators for their complicated calculations.