hahaha, Maths In Focus questions
Q9.
you construct a straight line from centre to chord, making a right angle triangle.
now, you need radius, which is a length in this right angle triangle.
(pi/6)/2 = pi/12 (new line constructed halves)
sin(pi/12) = 12.5/x
x = 12.5/sin(pi/12)
now L = theta*r...