exam Maths Puzzle Numerical Ability

topic: 30-60-90 triangle in geometry

a triangle with sides 12 and 15 intercepts an angle of 60 degrees. Find the third side.

NOTE: Letters to represent sides dont mater in this problem

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exam Other Question

Solve and graph the solution set of each of the following inequalities.
74) 7(x - 3) > 5x - 14 Consider the line y=6/5x+3 . The x is in the middle of the fraction 6/5x.

What is the slope of a line perpendicular to this line?
What is the slope of a line parallel to this line?