The Cosine Rule extends Pythagoras’ Theorem to non right angled triangles
lesson notes: 07 cosine rule
The Cosine Rule extends Pythagoras’ Theorem to non right angled triangles
lesson notes: 07 cosine rule
Using the sine ratio to find sides, angles and areas of non right angled triangles
lesson notes: 06 sine rule
Looking at the approach to solving trig equations
lesson notes:05 trigonometric equations
Manipulating trigonometric expressions using the trig identities
lesson notes:04 pythagorean trig identities
Handling trig with angles that are not acute
lesson notes:03 angles of any magnitude