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4-95.

TriangleEstelle is trying to solve for in the triangle at right. She lost her scientific calculator, but luckily her teacher tells her that , , and . Homework Help ✎

  1. Write an equation that Estelle could use to solve for .

    Recall:  and 

  2. Without a calculator, how could Estelle determine sin ? Explain.

    What angle is complementary to ?