Ja Ja Ja will take place on Thursday 29 November at its home of The Lexington, featuring performances from Denmark’s MØ, Finland’s Sin Cos Tan and Norway’s Highasakite. Tickets are £5 in advance and ...

Pages Sin, cos and tan Before we can use trigonometric relationships we need to understand how to correctly label a right-angled triangle.

The graph of y = tan θ As the point P moves anticlockwise round the circle, the values of cos θ and sin θ change, therefore the value of tan θ will change. This graph has a period of 180°.