What Is a Grid Connection?

Grid lines can be added to the chart for easy viewing and calculation of the data. Grid lines are extensions of the tick marks on the axes and pass through the drawing area. That is, style-like auxiliary lines displayed in the editing area to align images or text.

Gridlines:

The grid lines in Microsoft Office Word software are mainly used to help users integrate graphics,

figure 1

The acute angle trigonometric function reflects the correspondence between the acute angle and the edge-to-edge ratio in a right-angled triangle. Therefore, for the value of the trigonometric function, this angle must be placed in a right-angled triangle ^[2] .

As shown in Figure 1, in the grid, the sides of the small square are all 1, and the points A, B, and C are all on the grid points. Find the tangent of ABC.

Analysis ABC is not in a right-angled triangle, and its tangent cannot be obtained according to the ratio of opposite and adjacent sides. With the grid line connecting A and C, a right-angled triangle can be constructed to find the tangent.

The solution is shown in Figure 1. Connect AC and get it from the Pythagorean theorem.

AC =

, AB = 2

, BC =

+

=

,

CAB = 90 °,

tanB =

=

.