Year 10 Maths Notes

The reciprocal of a number is one divided by that number

A recurring decimal is any number with a repeated digit or section of repeated digits after a

decimal point

Bounds indicate the smallest and largest value that the measurement could be, based on how it has been rounded

Percentage change= actual change/original *100

Appreciate- an increase Depreciate- a decrease

Volume of sphere= 4/3 PI R CUBED

Surface area of sphere= 4 PI R SQUARED

Volume of cone=1/3 PI R SQUARED H

Curved surface area of cone= PI R L

Factorising is the process of finding factors of an expression (putting brackets back in)

Trigonometry:

3 sides to a right angled triangle: opposite, hypotenuse and adjacent

To find each of the ratios (sin, cos, tan), you use:

SOH CAH TOA