A kite shaped card-board is rotated about its line of symmetry (shown by dotted line). The solid figure so obtained has :

(i) one cone formed

(ii) two cones formed

(iii) three cones formed

1. only (ii)

2. only (iii)

3. both (i) and (iii)

4. neither (i) nor (iii)

If PT is tangent to the circle at point T and PAB is secant of this circle. Then which of the following statements is true ?

1. PT² = PA × AB

2. PT² = TB × PA

3. PT² = PA × PB

4. PT² = PB × TB

In the given figure, the angle of depression of point D from point A is :

1. 55°

2. 35°

3. 45°

4. 60°