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Trigonometri Trigonometri sfera Trigolo Trigona itama Trigona thoracica Trigana Air Triiodotironina Triton (bulan) Triosa fosfat isomerase TripoliRujukan
WikiPedia: Trigonometri http://www.pupress.princeton.edu/books/maor/ http://www.phy6.org/stargaze/Strig1.htm