NTNUJAVA Virtual Physics Laboratory
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Give me a standpoint and I will move the earth. ...Archimedes (287-212BC)
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Author Topic: The meaning of cosθ and sinθ  (Read 18724 times)
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Fu-Kwun Hwang
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on: October 13, 2014, 07:28:41 pm » posted from:,,Satellite Provider

You can drag the tip of blue of red arrow to change the angle.

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* trianglesincos.jpg (31.73 KB, 564x506 - viewed 1045 times.)
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Reply #1 on: November 01, 2014, 01:12:18 pm » posted from:Brussels,Brussels Hoofdstedelijk Gewest,Belgium

i have also recently made this similar model

<iframe frameborder="0" height="700;" src="https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejss_model_horizontalvertical/horizontalvertical_Simulation.xhtml" width="600">

CLICK https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejss_model_horizontalvertical/horizontalvertical_Simulation.xhtml
author: lookang, Fu-Kwun, Andreu Glasmann, Wolfgang Christian, and Mario Belloni
offline use: https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejss_model_horizontalvertical.zip
source: https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejss_src_horizontalvertical.zip
author of EJS 5: Paco.
« Last Edit: November 01, 2014, 01:16:31 pm by lookang » Logged
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Reply #2 on: January 16, 2015, 02:05:26 pm » posted from:Kannur,Kerala,India

An angle is the figure formed by two rays sharing a common endpoint, called the vertex of the angle. Angles provide a means of expressing the difference in slope between two rays meeting at a vertex without the need to explicitly define the slopes of the two rays. Angles are studied in geometry and trigonometry.
sin theta is = to opposite/hypotenuse.
cos theta is = to adjacent/hypotenuse.
tan theta is = to opposite/ adjacent. -*-
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Give me a standpoint and I will move the earth. ...Archimedes (287-212BC)
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