What is the smallest positive coterminal angle of 53pi/6? Express answer in radian measure in terms of pi. 1. divide by2. change to mixed fraction 3. discard whole part, keep fraction part 4. multiply by 1. Divide by ÷ × 2. Change to mixed fraction 3. Discard the whole number part, 4, and keep only the fraction part 4. Multiply by × the 2 cancels into the 12 Edwin