Consider the following statements: In an orthogonal, single–point metal cutting, as the side–cutting edge angle is increased
1. The tangential force increases
2. The longitudinal force drops
3. The radial force increases.
Which of these statements are correct?
(a) 1 and 3 only (b) 1 and 2 only
(c) 2 and 3 only (d) 1, 2 and 3