- Is it labeled the correct way?
- Do the students understand the difference between the adjacent, the opposite and the hypotenuse?
- Are the sin ratios accurate?
- Are the cosine ratios accurate?
- Listen for understanding and clarity when students share their work.
Inverse Trigonometric Ratios
I.SectionObjectives
- Identify and use the arctangent ratio in a right triangle.
- Identify and use the arcsine ratio in a right triangle.
- Identify and use the arccosine ratio in a right triangle.
- Understand the general trends of trigonometric ratios.
II.ProblemSolvingActivity-TeachingTime
- The students are going to be teaching the class about how to find trigonometric ratios and inverse trigonometric
ratios. - Divide the students into six groups.
- Assign each of the groups one of the following topics.
- Tangents
- Sines
- Cosines
- Arctangents
- Arcsines
- Arccosines
- Then tell students that they need to prepare a five minute presentation on their topic to teach the others in the
class about it. - Students with the arc tangents can use calculators.
- Each presentation must have a diagram, an example and a problem for the class to solve.
- Allow time for the students to work.
- Then have each group present their topic.
III.MeetingObjectives
- Students will identify and use the arctangent ratio in a right triangle.
- Students will identify and use the arcsine ratio in a right triangle.
- Students will identify and use the arccosine ratio in a right triangle.
IV.NotesonAssessment
- Create a checklist for each point that needs to be in the student presentation.
- Evaluate each group as they present their topic.
- Is the presentation complete?
- Are there any missing pieces?
- Do the students have a good understanding of the material?
- Are the students able to speak clearly about it?
Chapter 5. Geometry TE - Problem Solving