This function has two variables, which can be assigned to A and then solved. The function image is a heart-shaped line. This equation is also called "Cartesian love coordinate formula".
I love you, that is, the mathematical equation r=a( 1-sinθ). Both mathematics and literature originate from the way of nature. Numbers, geometric figures and various meaningful laws are all part of nature, and mathematicians hope to express the essence of these natural phenomena with concise mathematical language.
Formula introduction:
Universal formula, only tan(a2) polynomial and so on can glorify all trigonometric functions. After using the general formula, all trigonometric functions are represented by tan(a/2), which can be replaced by the letter T for convenience, so that the formula of a trigonometric function becomes an algebraic formula containing T, which can be solved by algebraic knowledge. The general formula makes up the gap between trigonometry and algebra.
The specific function includes the following four points: 1. Unify the angle to c/2; 2 The unified function is called tan3. Any real number can be expressed in the form of tan(a/2) (except special) and can be replaced by tangent function; 4. In some integrals, integrals with trigonometric functions can be transformed into integrals with fractions.
Summary: Therefore, this set of formulas is called tangent chord formula, which is called tangent chord formula for short. They are derived from the deformation of the double-angle formula. It is called universal formula because some integrals about trigonometric functions can be solved by method of substitution. See alternative triangle method.