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Learning Goal
‹10 of 10 in this skill_area
Double-angle and sum/difference formulas (basic awareness)
Teacher tools for this standard
Lesson Plan · Guided Notes · Exit Ticket · Re-teach · Homework
Teacher tools for this standard
Lesson Plan · Guided Notes · Exit Ticket · Re-teach · Homework
- Lesson Plan →Objectives, pacing and practice, built from this lesson's brief.
- Guided Notes →One page your students fill in and keep.
- Exit Ticket →Three items at the end of class. No student accounts.
- Re-teach →After an exit ticket: who missed what, and what to do tomorrow.
- Homework →Assign practice; it grades itself.
F 706. Use trigonometric concepts and basic identities to solve problems
F 704. Exhibit knowledge of unit circle trigonometry
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F 706. Use trigonometric concepts and basic identities to solve problems
F 704. Exhibit knowledge of unit circle trigonometry
What you'll learn
- Recognize when a double-angle or sum/difference formula applies, including inside a larger problem, and substitute into it to evaluate an expression
- Show with a numerical counterexample that $\sin(2x) \neq 2\sin(x)$ and $\sin(A+B) \neq \sin A + \sin B$
- State the double-angle formulas for sine, cosine and tangent, and the sum and difference formulas for sine and cosine with the sign behaviour that distinguishes them
- Evaluate an exact trig value at a non-landmark angle such as $75°$ by writing it as a sum or difference of two landmark angles
Slides
Step through the lesson, or watch it as a narrated video
Slides
In development
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