Length of Subtangent

Q.

[PT = length of tangent, $(x_1,y_1)$ is the point where the tangent is drawn, is the angle the tangent makes with x-axis, $x_1,y_1$, PT > 0]

How many of the following gives the length of subtangent ?

1. $\frac{y_1}{tan\theta }$
2. PT cos $\theta$
3. $\frac{y_1}{cot\theta }$
4. PT sin $\theta$

Q.

Length of subtangent is defined as the perpendicular distance between the point where the tangent is drawn and x-axis

1. False

2. True