Question

19. From two ships due east of a lighthouse and in line with its foot, the angles of

elevation of the top of the lighthouse are x and y, with x > y. The distance between the
ships is M. The distance from the lighthouse to the nearer ship is?​

Answer 1

Explanation:

tan x= AB/ BC+M

tan y=AB/ BC

tan y * BC = tan x*(BC +M)

tan y* BC /tan x=( BC +M)

tan y * BC - M* tan x/ tan x= BC