Q1: If D is the degree of the curve of radius R, the exact length of its specified chord, is

ANS:B - diameter of the curve x sine of half the degree

The exact length of the specified chord of a curve with a degree of curve �D and a radius �R can be calculated using trigonometric functions. The chord length is determined by the angle subtended by half of the degree of the curve. The correct formula for the length of the chord is: Chord length=Diameter of the curve × sin(D/2​) Therefore, the correct option is: Diameter of the curve x sine of half the degree