trigonometry.pptx

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ClaudelBeaOpaon1

Basic Trigonometry

Engineering

Angle Measurement:
• Angle-measurement of rotation of a given ray about its initial point.
θ
INITIAL SIDE
Y-AXIS
X-AXIS
+θ
-θ

Angle Measurement:
• Sexagesimal System
• Centesimal System
• Circular/Natural System

360º = 1 Rev
1
360
1 Degree
1º
1 min
1’
60’=1º

θ= 1 rad
R
R
R
𝜋 =
𝐶
𝐷
𝐶 = 𝜋𝐷 = 2𝜋R
2𝜋𝑅𝑎𝑑 = 1 rev

Other Trigonometric Functions
Y-Axis
X-Axis

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