Eq. and Ineq.             Graphs & Funct.             Systems             Polynomials             Frac. Expr.             Powers & Roots             Complex Nmbrs.             Quadratic Eq.             Quadratic Func.            Coord. Geo.             Exp. & Log.             Probability             Matrices             Trig.             Trig. Ident.             Eq. & Tri.

Welcome to the Algebra II/Trigonometry portion of the site!  On this and the following pages, we'll try to clear up some common problems people have with intermediate algebra (Algebra II) and trigonometry (which ought to have a class of its own just to learn how to pronounce it).  Everything from solving basic equations to the trigonometric ratios are covered. After each section, there is an optional (though highly recommended) quiz that you can take to see if you've fully mastered the concepts.  And don't forget to visit the message board and the formula database. Click any of the links below to go to the section you need help with.  Solving Equations and Inequalities Addition and multiplication principles Dealing with fractions or decimals Inequalities Graphs and Functions  Graphing points Graphing lines Finding the slope of a line Functions Parallel and perpendicular lines Systems of Equations and Inequalities Solving systems of equations graphically 3-variable systems of equations Systems of inequalities Polynomials and Factoring Combining like terms Multiplication of polynomials Factoring Factoring by grouping Sums and differences of cubes Fractional Expressions Combining like terms Multiplication Division Lowest Common Multiple Addition and subtraction Complex fractions Fractional equations Variation (direct and indirect) Powers and Roots Square roots Cube roots n-th roots Multiplication and simplification Division Operations (addition, etc.) Rationalizing the denominator Roots and exponents Radical equations Complex Numbers Imaginary numbers Complex numbers Equations with complex numbers Graphing complex numbers Quadratic Equations Solving quadratic equations Quadratic formula  Quadratic form  Quadratic Functions Symmetry  Even & odd functions Transformations Stretching & shrinking Parabolas X-intercepts (zeros) Coordinate Geometry Distance and midpoint formulas Circles Ellipses Hyperbolas Systems of equations Exponential and Logarithmic Functions Inverse functions Exponential functions Logarithmic functions Exponential and logarithmic equations Probability Sigma notation Permutations Combinations Probability Matrices Addition and subtraction Multiplication Trigonometry Ratios (sin, cos, tan) Reciprocal ratios (csc, sec, cot) Rotations (unit circle) Radians Cofunctions Graphs involving the trig. ratios Pythagorean and quotient identities Algebraic manipulation Trigonometric Identities Cosines Other identities Double angle identities Proving identities Equations and Triangles Inverses of trig. ratios Trigonometric equations Triangles Law of sines Law of cosines