What is the value of sin(π/3) + cos(π/4) - tan(2π/3)?
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What is the average age of the students in a class if their ages are 18, 17, 16, 19, and 20?
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What is the resultant displacement in a coordinate system when a vector of magnitude 10 and direction 30 degrees is added to a vector of magnitude 8 and direction 120 degrees?