If \(tan\theta = {a \over b}\), then \({a.sin\theta + b.cos\theta \over {a.sin\theta - b.cos\theta}}\) is:

 If secθ + tanθ = √3 (0° ≤ θ ≤ 90°) then the value of tan3θ = ?

If \(sec\theta + tan\theta =p\), (p >1) then \({cosec\theta +1\over cosec\theta-1 } = ?\)

A man standing at a point P is watching the top of a tower, which makes an angle of elevation of 30°. The man walks some distance to­wards the tower and then his angle of elevation of the top of the tower is 60°. If the height of tower is 30m, then the distance he moves is