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Radian measure and arc length
- Lesson: 1a9:19
- Lesson: 1b1:25
- Lesson: 1c1:17
- Lesson: 1d2:44
- Lesson: 25:08
Radian measure and arc length
Basic Concepts: Trigonometric ratios of angles in radians, Circles and circumference , Arcs of a circle
Related Concepts: Areas and sectors of circles
Lessons
arclength=r⋅θradian
- 1.Use the information in each diagram to determine the value of the variable
Give your answers to the nearest hundredth of a unit.a)
b)
c)
d)
- 2.A 20 cm long pendulum swings through an arc length of 60 cm. Through
what angle, in both degrees and radians, does the pendulum swing?
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13.
Trigonometry
13.1
Angle in standard position
13.2
Coterminal angles
13.3
Reference angle
13.4
Find the exact value of trigonometric ratios
13.5
ASTC rule in trigonometry (All Students Take Calculus)
13.6
Unit circle
13.7
Converting between degrees and radians
13.8
Trigonometric ratios of angles in radians
13.9
Radian measure and arc length
13.10
Law of sines
13.11
Law of cosines
13.12
Applications of the sine law and cosine law