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  1. A 30º-60º-90º triangle has a hypotenuse of length 2 units. Sketch and label the triangle, including the length of each side. Then use your diagram to determine exact values for the following trig expressions. Homework Help ✎

    1. tan 30º

    2. sin 30º

    3. cos 30º

    4. How is sin 60º related to cos 30º? Is the relationship true for any pair of acute angles in a right triangle? Explain your reasoning.