Polygonal Construction, ContinuedAngles(Continued)SINE METHOD: The sine method of angle construction is anothertrigonometric function of the acute angle that is the ratio of the opposite sideto the hypotenuse of a right triangle. Draw line x to any convenient length,again we will use 10. Find the sine of angle in a table of natural sines,multiply by 10, and strike R= 10 sin .Draw the other side of the angletangent to the arc.Figure 2-35 is an angle drawn by the sine method.Figure 2-35.—The sine method of angle construction.Continued on next page2-36
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