Check out KeysToMaths1 for more tutorials and worked solutions: https://www.youtube.com/channel/UCOYoe9L9R13HGUIhszjkeug

Worked solution to higher level 2014 trigonometry question. Check out KeysToMaths1 for more tutorials and worked solutions: https://www.youtube.com/channel/UCOYoe9L9R13HGUIhszjkeug

Check out KeysToMaths1 for more tutorials and worked solutions: https://www.youtube.com/channel/UCOYoe9L9R13HGUIhszjkeug

Check out KeysToMaths1 for more tutorials and worked solutions: https://www.youtube.com/channel/UCOYoe9L9R13HGUIhszjkeug

Check out KeysToMaths1 for more tutorials and worked solutions: https://www.youtube.com/channel/UCOYoe9L9R13HGUIhszjkeug

Check out KeysToMaths1 for more tutorials and worked solutions: https://www.youtube.com/channel/UCOYoe9L9R13HGUIhszjkeug

Worked solution to the trigonometry question on the higher level sample paper 2 (2012). Check out KeysToMaths1 for more tutorials and worked solutions: https://www.youtube.com/channel/UCOYoe9L9R13HGUIhszjkeug

Worked solution to 2014 higher level trigonometry question. 0:00 Cosine Rule, Area of a Triangle 2:38 Circumcentre of a Triangle 4:26 Compound Angle Identity for Cos2A 5:03 Arc Length and angle in radians 8:00 Graph of Asinkt, range and period 10:39 Standard Deviation using Calculator Check out KeysToMaths1 for more tutorials: https://www.youtube.com/channel/UCOYoe9L9R13HGUIhszjkeug

Using the unit circle to define the sine, cosine, and tangent functions

Proving the trigonometric identity 'Tan(A+B)' equals (tanA + tanB)/(1 - tanAtanB).

Proving the tigonometric identity 'Cos(A+B)' equals cosAcosB - sinAsinB.

Proving the trigonometric identity 'Sin(A+B)' equals cosAsinB + sinAcosB.

An quirky and insightful look at the history of Pythagoras and his famous theorem Visit http://vihart.com for more