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Mathematics Glossary

ABCDEFGHIJKLMNOPQRSTUVWXYZA Absolute error - The difference between the actual value and the measured value indicated by an instrument. Accessibility sampling - Selecting a sample from onlythose items that we most readily available. Acount servicing fee - Ongoing account keeping fees. Actual interest rate - Represents the actual oercentage return per year on an investment (the [...]
Trigonometric Ratios

Trigonometric Ratios

Circles with Cnetre $(0,0)$ Consider a circle with centre $(0,0)$ and radius $r$ units. Suppose $(x,y)$ is any point on this circle. Using ths distance formula; \( \begin{align} \displaystyle \sqrt{(x-0)^2+(y-0)^2} &= r \\ \therefore x^2+y^2 &= r^2 \end{align} \) $x^2+y^2 = r^2$ is the equation of a circle with centre $(0,0)$ and radius $r$. The [...]