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

A certain strain of bacteria divides every 2 hours. If a colony is started with 80 bacteria, then the time t (in hours) required for the colony to grow to N bac

Please help!! math question below!!! pic

what is the formula for radius

What is the equation?

What is the vertex and the equation of the axis of symmetry of the graph of y=x^2-6x-7

Can sumone plzhelp..Apply the distributive property to factor out the greatest common factor of all three terms . 9a-18b+21c=

what is the answer to this

List some qualities of A WRINKLE IN TIME that categorize the story as Science Fiction:

Which of these works of fiction is based on Leo Tolstoy's time serving in the Crimean War ? A. Youth B. Sevastapol Sketches C. Childhood D. Boyhood

The surface temperature averages at 15 degrees Celsius and increases 25 degrees Celsius with each kilometer of depth. Let one variable be the distance away from