Find the value of each trigonometric ratio using a calculator

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Find the value of each trigonometric ratio using a calculator. 1 sin 12 ° 2 cos 14 ° 3 cos 52 ° 4 cos 24 ° 5 tan 51 ° 6 cos 35 ° Find the value of each trigonometric ratio. 7 cos C 8 cos A 9 cos C 10 tan Z 11 tan A 12 cos X
Gauthmathier9814
7 Trigonometric ratios on your calculator
Activity 16 Trigonometric ratios on your calculator
How do you find cos 30 on a calculator?
How do you do ratios on a scientific calculator?

Find the value of each trigonometric ratio using a calculator. 1 sin 12 ° 2 cos 14 ° 3 cos 52 ° 4 cos 24 ° 5 tan 51 ° 6 cos 35 ° Find the value of each trigonometric ratio. 7 cos C 8 cos A 9 cos C 10 tan Z 11 tan A 12 cos X

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Gauthmathier9814

Grade 12 · 2021-06-17

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Find the value of each trigonometric ratio using a calculator. 1) Find the value of each trigonometric ratio using a - Gauthmath 2) \cos 14^{\circ } 3) \cos 52^{\circ } 4) \cos 24^{\circ } 5) \tan 51^{\circ } 6) \cos 35^{\circ } Find the value of each trigonometric ratio. 7) \cos C 8) \cos A 9) \cos C 10) \tan Z 11) \tan \ A 12) \cos X

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Explanation

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7 Trigonometric ratios on your calculator

There are various different units in which an angle can be measured, degrees being one of the possibilities. Before using your calculator to find the values of the trigonometric ratios of angles measured in degrees, you need to ensure that it is set to use the correct units.

Always check that your calculator is using the correct system of angle measurement before using trigonometric ratios.

Your calculator is set to use degrees if the display indicator

is shown at the top of the screen. If you see the indicator

, then your calculator is set to use different units for measuring angles.

Figure 9 The degrees setting

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The top row of the screen contains the letter D (white text on black) in the centre, and the word ‘math’ towards the right end.

Figure 9 The degrees setting

To set your calculator to work in degrees, use the key sequence

(SETUP)

(Deg).

To calculate the sine, cosine or tangent of an angle, press the

key and then type in the size of the angle. Note that the

and

keys automatically open a bracket for you. If you are simply calculating the sine, cosine or tangent of an angle, just press

after entering the angle – there is no need to close the bracket. If you are using these ratios as part of a larger calculation, then you will need to remember to close the bracket yourself (by pressing

) before entering the remainder of the calculation.

Activity 16 Trigonometric ratios on your calculator

You will notice from the answer to part (3) that the calculator displays the ratios of some angles as fractions, involving surds where needed, and not in decimal form.

How do you find cos 30 on a calculator?

The value of cos 30 degrees can be calculated by constructing an angle of 30° with the x-axis, and then finding the coordinates of the corresponding point (0.866, 0.5) on the unit circle. The value of cos 30° is equal to the x-coordinate (0.866). ∴ cos 30° = 0.866.

How do you do ratios on a scientific calculator?

Press the divide (÷) button on your calculator then enter the greatest common factor, which you found in Step 2. Hit the equals (=) button. Write this number down.