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{{#widget:YouTube|id=1I7Jp62sGXM}}
{{#widget:YouTube|id=1I7Jp62sGXM}}
{{#widget:YouTube|id=0UM5xzerIC0}}
{{#widget:YouTube|id=0UM5xzerIC0}}
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#slide share about trignomety and its application
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{{#widget:Iframe |url=http://www.slideshare.net/slideshow/embed_code/32928126 |width=450 |height=360 |border=1 }}
==Reference Books==
==Reference Books==