Maths - General
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Which formula do you use when you know two sides and one angle?
Cosine rule. a
^{2}
= b
^{2}
+ c
^{2 }
- (2bc Cos A)
Which formula do you use when you know all three sides but no interior angles?
Cosine Rule. Cos A = (b
^{2}
+ c
^{2}
- a
^{2}
)/2bc
Which formula do you use when you have one angle and one side?
SOH, CAH or TOA
In inequalities, when does the direction sign change?
When a side has been multiplied or divided by a negative number.
What's the formula for simple interest?
P x R x T/100 P = amount, R = rate, T = time (years).
What is the formula for compound interest?
(Percent + 100%)
^{n}
x initial deposit. n = years
What is the formula to find frequency density?
frequency/class width
Card Set Information
Author:
Anonymous
ID:
85888
Filename:
Maths - General
Updated:
2011-05-15 12:01:45
Tags:
igcse maths levels
Folders:
Description:
General maths
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