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Trigonometry (view source)

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===Activities===

Activity No.1

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For History of Trigonometry [http://en.wikipedia.org/wiki/History_of_trigonometry click here]

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For History of Trigonometry [http://en.wikipedia.org/wiki/History_of_trigonometry click here] <br>

Activity No.2

For History of Trigonometry slideshow [http://www.slideshare.net/rashidivya/trigonometry-maths-school-ppt-2 click here]

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