Find the height of the lighthouse, Mathematics

Assignment Help:

Two  ships  are  sailing  in  the  sea  on  either  side  of  a  lighthouse;  the  angles  of depression of two ships as observed from the top of the lighthouse are 600  and 450 respectively. If the distance between the ships is 200(1+√3/√3)meters, find the height of the lighthouse. (Ans:200m)

1634_tea ships sails.png

Ans:    In right Δ ABC

Tan 60 = h/BC

√3 = h/BC

⇒ H = √3 BC

In right Δ ABD

Tan 45 =  h/BD

h = BD

BC + BD = 200 (1+√3/√3)

68_BC.png

h = √3 BC

= √3 (200/√3)

= 200m

∴ height of light house = 200m


Related Discussions:- Find the height of the lighthouse

Pair of straight lines, the adjacent sides of a parallelogram are 2x2-5xy+3...

the adjacent sides of a parallelogram are 2x2-5xy+3y2=0 and one diagonal is x+y+2=0 find the vertices and the other diagonal

Rates of change or instantaneous rate of change, Rates of Change or instant...

Rates of Change or instantaneous rate of change ; Now we need to look at is the rate of change problem.  It will turn out to be one of the most significant concepts . We will c

Percentage, At an office, the manager earns 40% more than a first year empl...

At an office, the manager earns 40% more than a first year employees. The employee earns what fraction of the manager earnings?

If the area of the parallelogram is 36 m2 what is the height, The height of...

The height of a parallelogram measures 5 meters more than its base. If the area of the parallelogram is 36 m 2 , what is the height in meters? Let x = the measure of the base a

Triangle, in triangle abc ab=ac and d is a point on side ac such that bc*bc...

in triangle abc ab=ac and d is a point on side ac such that bc*bc=ac*cd. prove that bc=bd

Division, How do i divide 200 by 4

How do i divide 200 by 4

Permuation and combination, how many words can be formed from letters of wo...

how many words can be formed from letters of word daughter such that each word contain 2vowles and 3consonant

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd