STUDY DEVICE FOR MORE EASILY UNDERSTANDING A TRIGONOMETRICAL FUNCTION

STUDY DEVICE FOR MORE EASILY UNDERSTANDING A TRIGONOMETRICAL FUNCTION

PURPOSE: A study device for more easily understanding a trigonometric function is provided to improve learning ability by make learners easily understand the principle of a trigonometric function. CONSTITUTION: A square disc(1) has a center pole(4) at the center. An accommodating groove(2') has...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: YOON, KI CHEOL, YUN, SEOK HYEON
Format: Patent
Sprache:eng ; kor
Schlagworte:
ADVERTISING
APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE
CRYPTOGRAPHY
DIAGRAMS
DISPLAY
EDUCATION
EDUCATIONAL OR DEMONSTRATION APPLIANCES
GLOBES
PHYSICS
PLANETARIA
SEALS
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Beschreibung
Zusammenfassung:PURPOSE: A study device for more easily understanding a trigonometric function is provided to improve learning ability by make learners easily understand the principle of a trigonometric function. CONSTITUTION: A square disc(1) has a center pole(4) at the center. An accommodating groove(2') has a certain radius from the center pole. An angle display unit(2) indicates an angle and arc angle. The angle display unit is formed around the center pole. A plurality of first rulers(3) comprises a first through-hole. The center pole of the square disc is inserted into the first through-hole of the first ruler. The square disk and the first ruler are combined with each other.