angles

<a href="https://scienceres-edcp-educ.sites.olt.ubc.ca/2013/04/28/reference-angles/" title="Reference Angles"><img src="https://scienceres-edcp-educ.sites.olt.ubc.ca/files/2013/04/sec_math_tri_referenceAngles-150x150.jpg" alt="Reference Angles" class="thumbnail thumbnail " /></a>

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

<a href="https://scienceres-edcp-educ.sites.olt.ubc.ca/2013/04/28/the-unit-circle/" title="The Unit Circle"><img src="https://scienceres-edcp-educ.sites.olt.ubc.ca/files/2013/04/sec_math_tri_unitCircle-150x150.jpg" alt="The Unit Circle" class="thumbnail thumbnail " /></a>

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

<a href="https://scienceres-edcp-educ.sites.olt.ubc.ca/2012/08/01/polygon-angles/" title="Polygon Angles"><img src="https://scienceres-edcp-educ.sites.olt.ubc.ca/files/2012/08/elem_math_shapeandspace_polygonangles-150x150.jpg" alt="Polygon Angles" class="thumbnail thumbnail " /></a>

Polygon Angles

By Harish Appana Satya on August 1, 2012

This problem set deals with the internal and external angles of the polygons up to an octagon.

Posted in elem_mat_sas | Tagged angles, angles in a triangle, elementary math, external angles, internal angles, polygons, primary math, rectangles, shape, shape and space

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