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Home > A2C > Chapter 3 > Lesson 3.2.3 > Problem 3-126


Find and in the triangle at right.

Try making a similar triangle with side lengths divided by the greatest common factor. (70)

Remember the side lengths of a 30-60 right triangle.

Or you could use the fact that when you know the sine, your calculator will give you the angle.

m∠A = 30°