Arc length and sector area
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.
"Use definitions, properties, and theorems relating to circles and parts of circles such as radii, diameters, tangents, angles, arc lengths, and sector areas to solve problems."
"Solve problems using either radian measure or trigonometric ratios in the unit circle."
"Convert between angle measures in degrees and radians."
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"Use definitions, properties, and theorems relating to circles and parts of circles such as radii, diameters, tangents, angles, arc lengths, and sector areas to solve problems."
"Solve problems using either radian measure or trigonometric ratios in the unit circle."
"Convert between angle measures in degrees and radians."
What you'll learn
- Solve for an arc length, a sector area, a central angle, or a radius from the others, with the angle in degrees or in radians, including multi-step problems
- Calculate arc length using (theta/360) * 2*pi*r (degrees) and s = r*theta (radians)
- Calculate the area of a sector using (theta/360) * pi*r^2 (degrees) and A = (1/2)*r^2*theta (radians)
- Convert an angle with pi radians = 180° when an arc or sector problem requires it
Slides
Step through the lesson, or watch it as a narrated video
Slides
In development
Not yet available • Check back soon!
Practice
Try it on your own