Alg2 Lesson 4T.9: Inverting Trigonometric Functions

Roles:
Facilitator
Scribe
Resourcer
Includer

Lesson Goals:
● Creative Thinking
● Talk through controversies and conflict
● Recognize and reduce ambiguity
● Encourage thinking based on formulas & prior info

● Help explain ideas to each other
● Own your ideas and work
● Record ideas in your journal
● Answer Questions on Slides
● Follow your team roles

Facilitator

• Make sure that all peers are staying on task.

• Give advice or suggestions to resolve the problem.

• Be sure everyone is able to explain.

Scribe

• Make sure peers organize their results on their own
papers.

• Remind peers to use color, arrows, and other math tools
to communicate your mathematics, reasons, and
connections.

• Be ready to join the teacher for a huddle.

Resourcer

• Make sure peers are getting the materials needed.

• Make sure that all materials are put away neatly.

• Make sure that peers are logged in to the needed site.

• Help troubleshoot any technology difficulties that may
arise.

Includer

• Make sure that all peers are talking about their
work.

• Helps keep peers’ voice volume low.

• Encourages everyone to ask questions.

• Communicates conflicts or questions to the
teacher.

● Check off tasks & skills on calendar.

● Select skills to work on.

● Work on Deltamath.

Remember to work on the following too…

Part 1: Inverse

Trigonometric Functions

x is the ratio
length and θ
is the angle

​In trig notation, (sin(x))⁻¹ is not the same as sin⁻¹(x). (sin(x))⁻¹ is the reciprocal (flip elements in fraction positions) 1/sin(x) or csc(x) and sin⁻¹(x) is the inverse (switch angle and side length positions) function arcsin(x)

Part 2: Trigonometric

Identities

Part 3: Solving

Trigonometric Equations

Random Question of the Day Time

https://wheelofnames.com/4ke-epz We’ll spin
the wheel as a class and spend a minute or so
discussing our answers.