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QR Challenge: Values of Trigonometric Functions

Created using the ClassTools QR Treasure Hunt Generator

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Teacher Notes

A. Prior to the lesson:

1. Arrange students into groups. Each group needs at least ONE person who has a mobile device.

2. If their phone camera doesn't automatically detect and decode QR codes, ask students to

3. Print out the QR codes.

4. Cut them out and place them around your class / school.

B. The lesson:

1. Give each group a clipboard and a piece of paper so they can write down the decoded questions and their answers to them.

2. Explain to the students that the codes are hidden around the school. Each team will get ONE point for each question they correctly decode and copy down onto their sheet, and a further TWO points if they can then provide the correct answer and write this down underneath the question.

3. Away they go! The winner is the first team to return with the most correct answers in the time available. This could be within a lesson, or during a lunchbreak, or even over several days!

C. TIPS / OTHER IDEAS

4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.

Questions / Answers (teacher reference)

Question

Answer

1. Find cos 32.5°.0.8434
2. Find sin 78°10'.0.9787
3. Find sin 28°14'.0.4730
4. Find the measure of the acute angle θ to the nearest tenth of a degree given that cosθ=0.8330.33.6°
5. Find sin 132.4° and cos 132.4°.sin 132.4°=0.7385 and cos 132.4°=-0.6743
6. Find to the nearest tenth of a degree the two angles satisfying cosθ=0.7540 and 0°<θ<360°.41.1° and 318.9°.

 


Values of Trigonometric Functions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_cos_32.5°.

Question 1 (of 6)

 


Values of Trigonometric Functions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_sin_78°10'.

Question 2 (of 6)

 


Values of Trigonometric Functions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_sin_28°14'.

Question 3 (of 6)

 


Values of Trigonometric Functions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_the_measure_of_the_acute_angle_θ_to_the_nearest_tenth_of_a_degree_given_that_cosθ=0.8330.

Question 4 (of 6)

 


Values of Trigonometric Functions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_sin_132.4°_and_cos_132.4°.

Question 5 (of 6)

 


Values of Trigonometric Functions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_to_the_nearest_tenth_of_a_degree_the_two_angles_satisfying_cosθ=0.7540_and_0°<θ<360°.

Question 6 (of 6)