When a triangle has a right angle (90°) and squares are made on each of the 3 sides, then the biggest square has the exact same area as the other 2 squares put together! Pythagoras Theorem can be written in one short equation: a2 + b2 = c2 Where: c is the longest side of the triangle
x Intercept is where the graph of an equation crosses the x-axis y Intercept is where the graph of an equation crosses the y-axis How To find the intercepts What Intercept Steps x intercepts (x, 0) 1. Set y=02. Solve for x y intercepts (0, y) 1. Set x=02. Solve for y Learn More General
To simplify a square root, make the number inside the square root as small as possible. How to Simplifying Square Roots Rule where a, b > 0 Simplifying Square Roots for Fractions Rule Surds Surd is a root we can’t simplify further. So √5 is a surd. But √9 = 3 is not a surd. Learn
Solving trigonometry’s problem that use right angle can be done by using right triangle and Pythagorean theorem. But, in other problems it does not use right triangle. It uses any triangles. The solution is using law of sines and cosines. It will be more complex than using right triangle but it does not mean difficult.
Commutative Laws Commutative Laws say we can swap numbers over and still get the same answer. Commutative Laws for Addition a + b = b + a Commutative Laws for Multiplication a × b = b × a From these laws it follows that any finite sum or product is unaltered by reordering its terms
We can find an unknown angle in a right-angled triangle, as long as we know the lengths of two of its sides. Use Sine, Cosine or Tangent! Use SOHCAHTOA to help you, like this: How to Finding an Angle in a Right Angled Triangle 1. find the names of the two sides we know Adjacent
What are partial fractions? Fraction form can’t be ignored in mathematics. Some theorem or topics in mathematics using fraction and also partial fraction. The fractions are possible to be split into two or more simple fraction and it is called partial fraction. Partial fraction is one of ways to calculate complex fraction to be
Directly Proportional Directly proportional: when one amount increases, another amount increases at the same rate. The symbol for “directly proportional” is ∝ Inversely Proportional Inversely Proportional: when one value increases, at the same rate that the other decreases. Examples Directly Proportional Inversely Proportional Have more workers You pay more Work time is shorter How