Tangent ppt-Xiangjiao version nine courseware

Xiangjiao Version 9: 4.2 "Tangent" ppt 1. Understand the meaning of tangent and acute trigonometric functions, and give examples; 2. Can perform simple calculations based on the concept of acute trigonometric functions. A ladder forms a right triangle between the ground and the wall. The vertical height of the ladder and the horizontal distance of the ladder can be regarded as its right-angled sides, and the ladder can be regarded as its hypotenuse. The angle between the ladder and the ground (inclination angle)

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