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Trigonometry Lesson Plans for Right Triangles

Explore trigonometry concepts in right triangles with guided notes, puzzles, and practice activities. Learn to calculate trig ratios using SOHCAHTOA method. Perfect for students looking to master trigonometry skills.

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Trigonometry Lesson Plans for Right Triangles

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  1. 3/17 Bell Ringer θ 2√3 4 What’s the measurement of the hypotenuse? What’s the measurement of the opposite leg? What’s the measurement of the adjacent leg? 2 Homework: SOHCAHTOA Puzzle Grab today’s guided notes from the front of the room!

  2. News and Notes • Perfection Award: 8th Period • Note on what was handed back to you.

  3. 3/17 Agenda • I CAN identify and calculate the trig ratios given all three sides of a right triangle (SOH CAH TOA) • 1. Intro to New Material – Vocabulary • 2. Guided Practice: Races • 3. Puzzle Time • 4. ACT Question of the Day

  4. Intro to New Material (Ex. #1) • Find the three trig ratios for the 30° angle: 30° 2 √3 1

  5. Intro to New Material (Ex. #2) • Find the three trig ratios for the 60° angle: 2 √3 60° 1

  6. sin θ = 3/5 Cos θ = 4/5 tan θ = 3/4 5 3 θ 4 5 3 θ 5 θ 4 3 θ 4

  7. Guided Practice • Race up your Row!!! • The first person in each column will be in charge of copying down the triangle on paper. • First person finds missing side (method of choice), second finds sin (SOH), third finds cos (CAH), fourth finds tan (TOA). • Team distractions cost 1 point. • Inappropriate comments cost 1 point.

  8. Independent Practice • Begin working on your SOHCAHTOA puzzle on the back of today’s notes.

  9. ACT Question of the Day In the figure below, what is ? A. sine of angle G only B. cosine of angle G only C. cosine of angle H only D. sine of angle G and cosine of angle H. Homework: SOHCAHTOA Puzzle

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