Step 2: The third-angle theorem a) Drivers of semitrucks and other large vehicles pay close attention to signs similar to the one below. These signs indicate a change in the grade or slope of the road. Look at the black scalene triangle in the sign. How can the third-angle theorem be applied to find all three angle measurements in the black triangle? 10% 1B 60° b) Are the black triangles above congruent or similar? Explain. 90° D

Step 2: The third-angle theorem a) Drivers of semitrucks and other large vehicles pay close attention to signs similar to the one below. These signs indicate a change in the grade or slope of the road. Look at the black scalene triangle in the sign. How can the third-angle theorem be applied to find all three angle measurements in the black triangle? 10% 1B 60° b) Are the black triangles above congruent or similar? Explain. 90° D

Trigonometry (MindTap Course List)

10th Edition

ISBN:9781337278461

Author:Ron Larson

Publisher:Ron Larson

Chapter3: Additional Topics In Trigonometry

Section: Chapter Questions

Problem 40CT: To determine the angle of elevation of a star in the sky, you align the star and the top of the...

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