futurebird, (edited ) 
Math puzzle.
θ an angle in radians
b is a length associated with θ
there is a circleWhat area is A=[θbb]/[8sin(θ/2)sin(θ/2)] ?
futurebird, (edited ) Math puzzle.
θ an angle in radians
b is a length associated with θ
there is a circleWhat area is A=[θbb]/[8sin(θ/2)sin(θ/2)] ?