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Home > INT2 > Chapter 12 > Lesson 12.2.4 > Problem 12-135


The length of chord AB in ⊙D is 9 mm. If m = 32°, what is the length of ? Draw a diagram. Homework Help ✎

Notice the relationship between AD and DB.

Remember that the sum of the interior angles of a triangle is always 180°.

Rely on your trig ratios to solve for the length of the radius.

9.1 mm