• Pre-Algebra
• Algebra
• Geometry
• Graphs and functions
• Trigonometry
• Coordinate geometry
• Combinatorics
• Statistic
 Arithmetics Signed numbers Divisibility Decimals Fractions Percentages Proporcional reasoning Mixture problems Prime numbers Factoring Prime factorization GCF LCM Radicals Exponential expressions Uniform Motion Problems Ratio Proportions Direct variation Inverse variation
 Monomials Polynomials Special products Linear equations Quadratic equations Radicals Simultaneous equations Sequences and series Inner product Exponential equations Matrices Determinants Inverse of a matrix Logarithmic equations Systems of 3 variables equations
 Graphs Slope of a line Determine slope of line Equation of a line Equation of a line (from graph) Limits Quadratic function Parallel, coincident and intersecting lines Asymptotes Continuity and discontinuities Distances
 Law of sines Law of cosines
 Equations of a straight line Parallel, coincident and intersecting lines Distances Angles in space Inner product
 Factorial Variations without repetition Variations with repetition Permutations with repetition Permutations without repetition Exercises Circular permutations Binomial coefficient Combinations with repetition Combinations without repetition
 Arithmetic mean

 Trigonometry Trigonometric functions of an acute angle Trigonometric functions of related angles Trigonometric identities Solving right triangles Law of sines Law of cosines Return to emathematics.net Trigonometric functions at related angles Using the geometric symmetry of the unit circle, some trigonometric functions can be established. You can calculate the trigonometric functions of an angle in the second, third or fourth quadrant using its ratio with the first quadrant. Complementary angles. Two angles are aomplementary if they add up to 90 degrees. If A and B are two angles where A+B=90º, that is, B=90º - A, we have: sinA = cos B, so that, sin A = cos(90º-A) cosA = sin B , so that, cosA=sin(90º-A) Similarly, tgA = cotgB If sinA = 0.707 and cosA = 0.707 Calculate the sine, cosine and tangent of the complementary angle of A. Solution: Sine = Cosine = Tangent = (round the solution to thousandths)