# trigonometry

### teacher overview

trigonometrySample.pdf

### teach-learn-practise

useful extra

 teach-learn practise-learn timely practice 1 not written yet sign up for use of timely practicetrainingto ensure studentsretain their learning improve their accuracygo to www.timelypractice.comclick the Free Trial buttonor emailinfo@srslearning.com 2 trigonometryTL2.pdf trigonometry2.pdf 3 not written yet 4 trigonometryTL4.pdf trigonometry4.pdf 5 6 7 8 9 10 11 12 13 14

### NC information

National curriculum code and descriptions (partially) covered by the layers.

know the formulae for:

• Pythagoras’ theorem, a 2 + b2 = c 2 ,
• the trigonometric ratios,
• sinθ = opposite /hypotenuse ,
• cosθ = adjacent/hypotenuse and
• tanθ = opposite /adjacent ;
• apply them to find angles and lengths in right-angled triangles and, where possible, general triangles in two and three dimensional figures

know the exact values of sinθ and cosθ for θ = 0o , 30o , 45o , 60o and 90o ;

know the exact value of tanθ for θ = 0o , 30o , 45o and 60o

know and apply the sine rule,  and cosine rule,  to find unknown lengths and angles

know and apply Area = 1/2 absinC to calculate the area, sides or angles of any triangle