Triangle ΔABC has side lengths of a = 15,  b equals 15 times square root of 3 and c = 30 inches. Part A: Determine the  measure of angle m∠B. Part B: Show how to use the unit circle to find tan B.  Part C: Calculate the area of ΔABC.

An architect is planning to put a circular mosaic in the entry of a new building. The mosaic will be in the shape of a circle with radius of 6 feet. How many square feet of tile will be needed for the mosaic? (Round your answer up to the next whole number.}

The length, L, of the standard 82° included angle drill can be calculated using the formula L=0.575 , where Ø represents the diameter of the drill. Determine the length of a drill point with a diameter of 12.5 mm. Round your answer to 1 decimal place.

Reflectors The reflectors in each lane-marking stripe on a highway are spaced 16 yards apart. How many reflectors are needed for a one mile long lane-marking stripe?