standard_description: Explain and use the relationship between the sine and cosine of complementary angles.
problem_activity: Problem 1
What is the measure, in wedges, of the following angle?
[IMG]
A ray that turns all the way around its endpoint and back to its starting place has made a full turn. We say that the ray has turned 360
degrees
.
[IMG]
How many degrees has the ray turned from where it started?
[IMG]
[IMG]
[IMG]
Problem 2
Determine how many degrees the wedge created in Lesson 5 measures, and use that to create a makeshift protractor to measure benchmark angles.
Use a similar process to create a makeshift protractor that measures in increments of 45°.
Problem 3
Using the makeshift protractors you made in Anchor Task #2, find the measure, in degrees, of each of the following angles. If an angle can’t be measured precisely with either protractor, make an estimate.
| 1.            |https://d21royfkw9g4l6.cloudfront.net/HGpdLmPiXL2wEUGq7M9oOB_HN2R71.png|  |https://d21royfkw9g4l6.cloudfront.net/HGpdLmPiXL2wEUGq7M9oOB_HN2R71.png| image:: https://d21royfkw9g4l6.cloudfront.net/HGpdLmPiXL2wEUGq7M9oOB_HN2R71.png |     1.            |https://d21royfkw9g4l6.cloudfront.net/FMs2nYL35BSek6I79QzcBc_7N2YKT.png|  |https://d21royfkw9g4l6.cloudfront.net/FMs2nYL35BSek6I79QzcBc_7N2YKT.png| image:: https://d21royfkw9g4l6.cloudfront.net/FMs2nYL35BSek6I79QzcBc_7N2YKT.png      |
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| 1.            |https://d21royfkw9g4l6.cloudfront.net/6c8XNXS8LTq61hZkJBlXSF_CSHLNR.png|  |https://d21royfkw9g4l6.cloudfront.net/6c8XNXS8LTq61hZkJBlXSF_CSHLNR.png| image:: https://d21royfkw9g4l6.cloudfront.net/6c8XNXS8LTq61hZkJBlXSF_CSHLNR.png | 1.                     |https://d21royfkw9g4l6.cloudfront.net/uPouVZDNncCcCiLGZlYrBR_VUQXH3.png|  |https://d21royfkw9g4l6.cloudfront.net/uPouVZDNncCcCiLGZlYrBR_VUQXH3.png| image:: https://d21royfkw9g4l6.cloudfront.net/uPouVZDNncCcCiLGZlYrBR_VUQXH3.png |


aligns: no