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 Suma y resta Producto por escalar Producto Inversa
 Monomials Polynomials Special products Equations Quadratic equations Radical expressions Systems of equations Sequences and series Inner product Exponential equations Matrices Determinants Inverse of a matrix Logarithmic equations Systems of 3 variables equations
 2-D Shapes Areas Pythagorean Theorem Distances
 Graphs Definition of slope Positive or negative slope Determine slope of a line Ecuación de una recta Equation of a line (from graph) Quadratic function Posición relativa de dos rectas Asymptotes Limits Distancias Continuity and discontinuities
 Sine Cosine Tangent Cosecant Secant Cotangent Trigonometric identities Law of cosines Law of sines
 Ecuación de una recta Posición relativa de dos rectas Distancias Angles in space Inner product

 Trigonometry 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. Supplementary angles. Two angles are supplementary if they add up to 180 degrees. If A and B are two angles where A+B=180º , that is, B=180º - A, we have: sinA = sin B, so that, sin A = sin(180º-A) cosA = -cos B , so that, cosA = -cos(180º-A) Similarly tanA = -tanB Using these formulas, you can calculate the trigonometric functions of an angle in the second quadrant if you know the trigonometric functions of its supplementary angle. If sinA = 0.342 and cosA = 0.94 Calculate the sine, cosine and tangent of the supplementary angle of A. Solution: Sine = Cosine = Tangent = (round the solution to thousandths)