Trigonometric function:
Sine theorem: a/sinA = b/sinB = c/sinC
Cosine theorem: c? = a？ + b？ - 2abcosC
Definition of tangent: tanθ = sinθ/cosθ.
Plane geometry:
Slope of a straight line: k = (y? -Really? )/ (x？ - x？ )
Distance formula from point to straight line: d = |Ax+By+C|/√(A? + B？ )
Functions and derivatives:
Linear function: y = kx+b
Quadratic function: y = ax? + bx + c
Definition of derivative: f' (x) = lim ┬ (δ x→ 0)? (f(x+δx)-f(x))/δx
Derivatives of common functions: (constant k)' = 0, (xn)' = NX (n- 1), (e x)' = e x, (sinx)' = cosx.
Probability and statistics:
Probability of random events: P(A) = n(A)/n(S)
Permutation and combination: A(n, m) = n! / (n-m)！ ，C(n，m) = n！ / ((n-m)！ m！ )
Trigonometric functions and derivatives:
sin'(x) = cos(x)，cos'(x) = -sin(x)
Tan'(x) = seconds? (x)，cot'(x) = -csc？ (10)
What is listed here are only some common compulsory formulas for the college entrance examination of mathematics, which do not represent all the contents. In the process of preparing for the exam, it is suggested to study and master the relevant formulas in textbooks and guidance books seriously, and conduct targeted review for specific test sites.
In addition, candidates should pay attention to understanding and mastering the application scenarios of various formulas in the preparation process, and be able to use formulas flexibly to solve problems according to the requirements of questions. Remind candidates to do more real and simulated questions in the review process to deepen their understanding and application ability of the formula.