What is the value of sin(pi/4) + cos(3pi/2) - tan(pi/3)?
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Math Question: The diameter of a circle is 6 cm. Find the area of a rectangle with sides measuring 5 cm and 8 cm, then divide it by the area of a parallelogram with base 10 cm and height 4 cm.
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What is the area of a triangle with side lengths 5, 12, and 13, using Heron's Formula?