Properties of Interior Exterior Angles in Triangles and Quadrilaterals - 7:49
20 February 2011, 7:27 am
Properties of Angles formed by a Transversal - 6:17
20 February 2011, 7:27 am
Properties of Quadrilaterals - 4:36
20 February 2011, 7:27 am
Median of a Triangle Properties - 6:42
20 February 2011, 7:26 am
Altitude of a Triangle Properties - 7:50
20 February 2011, 7:26 am
Introduction to Sine Law - 9:39
13 February 2011, 9:36 am
Introduction to Cosine Law - 11:38
13 February 2011, 9:36 am
Coordinate Geometry - 6:46
30 January 2009, 9:14 pm
Trig Ratios SOH CAH TOA - 20:58
KEY CONCEPTS:
ONLY for RIGHT ANGLED TRIANGLES
SOH-CAH-TOA
SOH - sinA=opp/hyp
CAH - cosA=adj/hyp
TOA - tanA=opp/adj
Longest side of right angled triangles is called the HYPOTENUSE. Always found on the opposite side of the right angle of the triangle.
To find the angle use the inverse of the trig buttons on your calculator.
30 January 2009, 9:13 pm
Angle Relationships - 20:58
KEY CONCEPTS:
Complementary Angles = 90
Supplementary Angles = 180
Opposite Angles = one another
Parallel Lines with a Transverse through it:
Corresponding Angles = one another (F-Shape)
Co-Interior Angles add up to 180
30 January 2009, 8:11 pm
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