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Can acute trigonometric function only be used in right triangle
Answer: the trigonometric function value of acute angle in junior high school is defined in right triangle, so the trigonometric function value of acute angle in junior high school is completed by constructing right triangle, that is to put the angle into a right triangle. The application of trigonometric function of acute angle can solve right triangle
In the further study of trigonometry and trigonometric function, sine theorem and cosine theorem can be used to solve oblique triangle
In senior high school, the trigonometric function value can also be solved by the coordinate definition method. At this time, the angle is also extended to any angle. The trigonometric function value of any angle can be transformed into the trigonometric function value of acute angle
So acute trigonometric function is not only used in the range of right triangle
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