Algebra

[lightoftruth]

does anyone know of a simple, easy to learn from website taht will help me with my algebra especially quadratics and also sine cosine and tangent graphs.

Merry Yuletide

[bernardo]

One of the things I was taught was "SOHCAHTOA" (a bit like the volcano Krakatoa) which stands for:

Sine = Opposite over Hypotenuse
Cosine = Adjacent over Hypotenuse
Tangent = Opposite over Adjacent

Also remember that sine is the one that starts small (i.e. when the angle is 0 degrees, the sine is 0) and goes up to 1 when the angle is 90 degrees. Cosine is the same shape as sine, but shifted along by 90 degrees. When the angle is 0, the cosine is 1, and when the angle is 90, the cosine is 0.

[makinsonc]

www.bbc.co.uk/bitesize