Mathematics
From a boat, 300 m away from a vertical pillar, the angles of elevation of the top and the foot of a vertical pillar at the edge of the cliff are 55°40' and 54°20' respectively. Find the height of the pillar correct to the nearest metre.
Related Questions
In rhombus ABCD, A(7, 3) and C(0, -4) are two opposite vertices. Find :
(i) mid-point of diagonal AC
(ii) mid-point of diagonal BD
(iii) slope of diagonal AC
(iv) the equation of diagonal BD.
Solve the following inequation, write down the solution set and represent it on the real number line. -2 + 10x ≤ 13x + 10 < 24 + 10x, x ∈ R.
In the given figure, O and O' are centers of two circles, touching each other at point P. The common tangent at P meets a direct common tangent AB at M. Show that :
(i) M is mid-point of AB.
(ii) ∠APB = 90°
