SCIENTIFIC CALCULATOR

5.1 Inputing numbers in scientific notation to your calculator

The numbers expressed in scientific notation can be input directly to the calculatorby using the key that is located at the lower row of keys. In this case, for example, it you can enter numbers using keys .

Activities 13 Calculatingwith scientific notation

Use the scientific notation features on your calculator to calculate each of the above you can answer the question in both standard and scientific formats.

Reveal answer

6 Powers and surds to the calculator. calculator

Input fractional and negative power

Within Activity 4 you saw how you could utilize key key as a way to add powers using the calculator. The key can be combined with other functions, such like the fraction templates for calculating negative and fractional power.

Activities 14 Calculating more power

Determine each of the following using your calculator Give your answer accurate to 3 significant figures.

The answer is revealed

6.1 Using roots on your calculator

Similar to the some keys in the calculator for entering power values as well, roots can enter directly. The square root can also be determined using this keyboard. For instance, can be entered by using . Cube roots can be entered by using the second function of this key. For higher roots, such as fourth or fifth roots, it is necessary to apply the more general template which is the other purpose that is the second function of this keys. This design is filled using the arrow and number keys ( and ) in a way similar to the way used when the fraction template is filled in.

Activities 15 Calculating roots

Find the appropriate answer for each of the questions below using your calculator Then, you must give your answer right to 3 significant numbers.

Reveal answer

As you can see from the outcome of Activity 15 part 4 that the calculator often provides answers with surds.

This is only the case if the calculator is operating in the suggested Math mode.

To determine the decimal equivalent of an answer like this, you could use these or keys that you've previously used to discover the decimal forms from fractional questions.

6.2 Inserting a root missing

Sometimes , when entering into your calculator an expression that has roots, you may fail to press the proper function key. However, moving the cursor to the right place and pressing the wrong key such as in section 1 does not work, as this will just insert the template in an unfilled position.

If you'd like to edit an expression to insert an incorrect root, first move the cursor in the proper position, which is, in the direction to the left. After that, activate the "Insert" option using the key (INS) after which press the root key that is appropriate.

7 Trigonometric ratios on your calculator

There are various different angles that is measured, with degrees being one of the possibilities. Before you can use your calculator to find the values of trigonometric proportions of angles measured in degrees, it is important to make sure that it's set to utilize the appropriate units.

Make sure that your calculator is making use of the correct system for angle measurement prior to using trigonometric ratios.

This calculator has been set to work with degrees if the display indicator is displayed in the center of the display. If you see that indicator and/or the indicator, then it means that your calculator has been set up to utilize different measurements when measuring angles.Figure 9 shows the degrees setting

To change the settings of the calculator to work in degrees, follow keys (SETUP) (Deg).

To determine the sine cosine, tangent or sine of an angle, press to use the , or key and type in the size that the angle. Take note that , and keys automatically open the bracket for the user to use. If you're merely calculating the cosine, sine or the tangent of an angle, just press after when you've entered your angle. There is nothing to do but close the bracket. If you are using the ratios as part of the calculation of a larger number, you'll need to close the bracket on your own (by press ) before you enter the other part of the calculation.

A few older models of calculator require that the angle be input first. It is then which is then followed by , or button.

The activity 16 is Trigonometric Rapports. You can find them on your calculator

Calculate the worth of each of these using your calculator by giving your responses correct to 3 significant figures.

Find the answer

If you look at the explanation to section (3) that the calculator shows the ratios of certain angles as fractions with surds when needed, and not in decimal form.

The decimal form can be found using either .

8 Resolving angles from trigonometric ratios

Inverse trigonometric results are found with the second function as well as of the keys and of the. These functions function similarly to , and .

Activity 17 Identifying angles using trigonometric ratios

Calculate the value of each of the following equations using your calculator, where possible you can answer the questions correctly within 1 decimal.

Find the answer

In part (1) of the lesson above, you utilized your calculator to determine an angle with a sine value of 0.5. It's not the sole angle whose sine is 0.5, but you can apply this angle to discover the other angles. Similar comments apply to parts (2) (2) and (3).

9 Radians on your calculator

Your calculator could be set to calculate trigonometric operations using the measure of radian angles, not degrees, using keys (SETUP) (Rad).

In this mode the indicator on the display will be displayed.

Activity 18 Radians on your calculator

In this exercise you will be measuring angles in Radians. Determine the value of the following expressions and then provide your answers to three significant figures.

Answer the question

In the final example of this activity that where an answer is a simple (possibly fractional) multiple of the answer, it is displayed in terms of rather than as a decimal number.

10-Logarithms using your calculator

Logarithms that are based on base 10 numbers can be calculated with the help of keys. key. In this case, the logarithm can be calculated using an algorithm called the key sequence . Also, just like trigonometric functions that the key opens an automatic bracket that must be closed if you are using the logarithm you calculated as part of a longer calculation.

The second function of the key , accessible by using it, is that it can be used in lieu of computing powers of 10.

The activity 19 Calculating logarithms

Use your calculator to determine the value from the table below.

, , (1 billion) ,