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Trigonometry

Trigonometric ratios of angles in radiansGeometry

Circles and circumference Geometry

Arcs of a circle- Home
- GCE O-Level A Maths
- Trigonometric Ratios and Angle Measure

Still Confused?

Try reviewing these fundamentals first.

Trigonometry

Trigonometric ratios of angles in radiansGeometry

Circles and circumference Geometry

Arcs of a circleStill Confused?

Try reviewing these fundamentals first.

Trigonometry

Trigonometric ratios of angles in radiansGeometry

Circles and circumference Geometry

Arcs of a circleNope, I got it.

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Get Started Now- Lesson: 1a9:19
- Lesson: 1b1:25
- Lesson: 1c1:17
- Lesson: 1d2:44
- Lesson: 25:08

Basic concepts: Trigonometric ratios of angles in radians, Circles and circumference , Arcs of a circle,

Related concepts: Areas and sectors of circles,

$arc\;length= r \cdot \theta\;radian$

- 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?

23.

Trigonometric Ratios and Angle Measure

23.1

Angle in standard position

23.2

Coterminal angles

23.3

Reference angle

23.4

Find the exact value of trigonometric ratios

23.5

ASTC rule in trigonometry (**A**ll **S**tudents **T**ake **C**alculus)

23.6

Unit circle

23.7

Converting between degrees and radians

23.8

Trigonometric ratios of angles in radians

23.9

Radian measure and arc length

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