Foundation tier now requires students to know the exact values in surd form of specific angles.
A simple and clear illustration of how to derive these values, and the values themselves.
Easy to use in the classroom, or print slides for crib sheets for learners.
The specs require:
'•know the exact values of sin θ and cos θ for θ = 0°, 30°, 45°, 60° and 90°
•know the exact value of tan θ for θ = 0°, 30°, 45° and 60 '
Includes a recap of the trig functions and Pythagoras, and the graphs of each function to show values at zero and ninety degrees, plus showing that tan 90 does not exist.
Plus an activity to use the above values in sin and cos sum and difference formulas, giving practice in manipulating surds for higher candidates, and an extension to use the addition and subtraction formula for tangent.
Hence entirely suitable for A'level pure mathematics, and recap of GCSE knowledge and skills.
If you like this, try my big bundle of material on surds for £3. https://www.tes.com/teaching-resource/maths-gcse-working-with-surds-huge-bundle-of-stuff-11551032