sapkotarakshika111 sapkotarakshika111

01-09-2020
Mathematics

contestada

From the top of a tree 20 metres high,the angle of depression at a point on the opposite bank of a river is found to be 30° .Find the breadth of the river.

Respuesta :

itsabraham2004 itsabraham2004

01-09-2020

Answer:

17.3

Step-by-step explanation:

sin(30)=0.5

0.5*20=100

20*20+x*x=100

x=17.3

Answer Link

Otras preguntas

What is the name given to the earliest span of time in earth history?

If the molecular mass of tetraoxosulphate(VI) acid is 98, calculate it's vapour density.

The childhood level living scale was questioned as to its validity because

Sherry is a clinical sociologists who practices marriage and family therapy. she is also a college professor. one of her current students asks her if she can ma

Which of the following statements is not true? A. An artist is influenced by the major events that happen during his or her lifetime. B. An artist is influe

The united states granted most favored nation trading status to china, which means that

The Gentlemen's Agreement was between the United States and Japan. What concession did each side make?

The price of a gallon of unleaded gas has dropped to $2.81 today. yesterday's price was $2.88 . find the percentage decrease. round your answer to the nearest t

The windows of a downtown office building are arranged so that each floor has six fewer windows than the floor below it. If the ground floor has 52 windows, how

Amy walks 5 miles north. Then, she turns east and walks another 6 miles before she stops to rest. How far is Amy from her starting point when she stops to rest?