In the first semester of high school, I did not learn trigonometric functions, trigonometric functions need to be focused on, trigonometric functions are a watershed in high school mathematics, trigonometric functions are learned well, and the next solution of triangles will be learned

In the first semester of high school, I did not learn trigonometric functions, trigonometric functions need to be focused on, trigonometric functions are a watershed in high school mathematics, trigonometric functions are well learned, and the next solution of triangles will be easy to learn, the solution of triangles is good, stereo geometry and analytic geometry can be handy.

The human-taught version of the B version of the trigonometric function is only learned at the beginning of this semester, so for the B version, what is learned this semester is very important, and whether it can pass in the future and whether it can sprint high scores depends on this semester.

Many children three-dimensional geometry, analytical geometry to learn hard, can not find the idea, mainly to solve the triangle this piece of mastery is not in place, the solution of triangles including the solution of right triangles and sine and cosine to understand triangles, triangles are indispensable figures in geometry, so the solution of triangles in stereo geometry and analytic geometry is widely used. The solution of right triangles is applied precisely to the definition of trigonometric functions, and the sine and cosine definite understanding triangles are usually synthesized with trigonometric identity transformations.

That is to say, the next few chapters are intrinsically linked, not independent, so this semester needs to be down-to-earth to learn, and whether mathematics can turn over depends on this semester.

Fortunately, the trigonometric function, the regularity of solving triangles, and the skill are relatively strong, and it is easier to master the methods and techniques. Of course, for children who do not summarize, it is a bit difficult to learn, and they will feel that there are too many formulas. Including those who do not like to write, rarely draft, and do not combine numbers and shapes, it will be more difficult to learn, because the combination of numbers and shapes of trigonometric functions is particularly important, and the combination of numbers and shapes can reduce the burden of memory and reduce the degree of abstraction. #New High##家有高中生 #