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Trig. Ratios for positive multiples 30, 45 and 60 degrees : ExamSolutions

In this tutorial I show you how to calculate the exact values of sin, cos and tan for positive multiples of 30 and 60 degrees. To see this and other tutorials go to http://www.examsolutions.co.uk/maths-tutorials/Core-maths/trigonometry/trig-ratios/60-30-45-multiples-tutorial.php
Length: 10:49

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