Tangent Function - Tangent is the ratio of the sine function to the cosine function. sin θ = P / H.Ĭosine Function - The cosine function is the ratio of the base to the hypotenuse. Sine Function - The sine function can be defined as the ratio of the perpendicular to the hypotenuse of a right-angled triangle. The formula to calculate the area of a triangle is \frac\times base\times height. y = mx + c is the general equation of a straight line, where m is the slope and c is the y-intercept.Īrea of a Triangle - Area of a triangle can be defined as the space covered within the boundary of the triangle. Slope - The slope of a line can be defined as the gradient of the line that describes its steepness. Given below are some important concepts and formulas that cover the scope of precalculus. It helps to streamline the process of studying and preparing for a test. u + v = (u 1+v 1, u 2+v 2, u 3+v 3), where, u = (u 1, u 2, u 3) and v = (v 1, v 2, v 3)Ī precalculus cheat sheet can be very important as it gives a complete overview of various vital concepts before an examination.C = A + B, where c ij = a ij + b ij, where A, B and C are square matrices.A -1A = I, where A -1 is the inverse matrix of A and I is the identity matrix.
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