Is it possible to have an angle greater than 360

Since you've gone around the track 3. So you can use that value in your computations:. To see the Review answers, open this PDF file and look for section 1. Video: The Unit Circle. Solution Since you've gone around the track 3. Review Find the value of each expression. Additional Resources Interactive Element. Most questions answered within 4 hours. Choose an expert and meet online. No packages or subscriptions, pay only for the time you need. Math Trigonometry.

Add comment. First, your calculator needs to be in the correct "mode". In chapter 2 you will learn about a different system for measuring angles, known as radian measure.

In this chapter, we are measuring angles in degrees. This is analogous to measuring distance in miles or in kilometers. It's just a different system of measurement. We need to make sure that the calculator is working in degrees. To do this, press [MODE]. You will see that the third row says Radian Degree. If Degree is highlighted, you are in the correct mode. This will highlight Degree.

Then press 2 nd [MODE] to return to the main screen. Now you can calculate any value. For example, we can verify the values from the table above. The calculator should return the value. You may have noticed that the calculator provides a " " after the SIN. In the previous calculation, you can actually leave off the " ". However, in more complicated calculations, leaving off the closing " " can create problems. It is a good idea to get in the habit of closing parentheses.

Round your answer to 4 decimal places. The calculator should return the number 1. This rounds to 1. In this lesson we have examined the idea that we can find an exact or an approximate value of each of the six trig functions for any angle.

We began by defining the idea of a reference angle, which is useful for finding the ordered pair for certain angles in the unit circle. We have found exact values of the trig functions for "special" angles, including negative angles, and angles whose measures are greater than degrees. We have also found approximations of values for other angles, using a table, and using a calculator.

In the coming lessons, we will use the ideas from this lesson to 1 examine relationships among the trig functions and 2 apply trig functions to real situations.