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sine

Reference Angles

By Harish Appana Satya on April 28, 2013

The concept of reference angles will be used to find equivalent ratios for sine, cosine, and tangent in different quadrants.

Posted in sec_mat_tri | Tagged angles, cosine, geometry, math 11-12, quadrants, reference angle, sine, tangent, trigonometric ratios, trigonometry, unit circle

The Unit Circle

By Harish Appana Satya on April 28, 2013

The exact value of the trigonometric ratios for 0°, 30°, 45°, 60°, and 90° will be discovered by analyzing the unit circle using special triangles.

Posted in sec_mat_tri | Tagged angles, cosine, geometry, math 11-12, quadrants, right angle triangle, sine, tangent, triangles, trigonometric ratios, trigonometry, unit circle

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