This applet shows how the graphs of sin (θ) and cos (θ) follow directly from the definition of these functions. Move the slider to change the angle. Observe that after the point moves once around the ...

Revise trigonometric ratios of sine, cosine and tangent and calculate angles in right-angled triangles with this Bitesize GCSE Maths Edexcel guide.

National 5 Working with trigonometric relationships in degrees Trigonometric relationships Trigonometric functions can have several solutions. Sine, cosine and tangent all have different positive ...