## Essential Formulae

Volumes and Surface Areas

Volume of Cone

Curved Surface Area of Conewhere l is the slant height.

Volume of Sphere

Surface Area of Sphere

Probability

If two eventsandare independent with probabilitiesandrespectively then the probability ofandboth happening,

If the probability of an eventhappening isand then areoccasions in whichmay happen then the expected number of occurrences ofis

Integration and Differentiation

Trigonometry

Geometry

Ifat a pointthem the equation of the tangent atisand the equation of the normal is

A circle with equationhas centreand radius