Trigonometric ratios (SOH-CAH-TOA)

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.

"Solve problems in a variety of contexts using: ... • right triangle trigonometry." "Use similarity to calculate values of sine, cosine, and tangent."

"Solve problems in a variety of contexts using: ... • right triangle trigonometry."
"Use similarity to calculate values of sine, cosine, and tangent."

What you'll learn

Define sine, cosine, and tangent as ratios of specific sides in a right triangle
Correctly identify the opposite side, adjacent side, and hypotenuse relative to a specified acute angle
Set up and evaluate sin, cos, and tan from a labeled right triangle diagram
Use similarity to explain why a trigonometric ratio depends only on the angle, and use it to find a ratio in a similar right triangle
Find all three trigonometric ratios when given two sides of a right triangle
Determine a missing ratio when given one trigonometric ratio

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Slides

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Slides

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