Graphs of Cosine and Sine. Cosine and sine of an angle θ are defined to be the x and y-coordinates of the point P on the unit circle with the property that the line from O to P makes and angle θ with ...

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

Sine, cosine and tangent all have different positive or negative values depending on what quadrant they are in. Part of Maths Trigonometric skills. ... From the graph of the function, ...