A 1.5 m tall boy

Asked by maham237 @ 02/01/2021 in Mathematics viewed by 431 People

A boy 1.5 m tall can just see the sun over a wall 71.5 m high which is
40.41 m away from him. Find the angle of elevation of the sun.

Answered by maham237 @ 02/01/2021

Answer:

C. 45 degree angle

Step-by-step explanation:

let AB be the height of the wall and CD be the height of boy

with BC as distance between them.

we have AE = AB-BE = 3.64-1.54 = 2.1m

and ED = BC = 2.1m

in triangle AED, we have

tanФ = P/B = 2.1/2.1

tanФ = 1

∴ Ф = 45°

Hence the sun is elevated at an angle of 45 °.

A 1.5 m tall boy is standing at some distance

Asked by admin @ 02/08/2021 in Math viewed by 312 persons

A 1.5 m tall boy is standing at some distance from a 30 m tall building.The angle of elevation from his eyes to the top of the building increases from …

How tall is 1.7 m in feet

Asked by maham237 @ 01/01/2021 in Mathematics viewed by 310 persons

Diego is 165 cm talk. Andre is 1.7 m tall. Who is taller,Diego or Andre?

Is 5 2 tall for a 12 year old boy

Asked by admin @ 22/11/2021 in Social Studies viewed by 313 persons

Evan is a tall, 12 year old boy. he has a scar on his right cheek. he is intelligent and an excellent drummer. which of his traits did he most …

A 1.2 m tall girl spots a balloon

Asked by admin @ 25/08/2021 in Math viewed by 410 persons

A 1.2m tall girl spots a balloon moving with the wind in a horizontal line at a height of 88.2m from the ground. The angle of elevation of the balloon …

A boy stands at 78.4 m from a building

Asked by admin @ 17/08/2021 in Physics viewed by 376 persons

A boy stands at 78.4m from a building and throws a ball which just enters a window 39.2m above the ground. Calculate the velocity of projection of the ball.

A boy stands at 39.2 m from a building

Asked by admin @ 13/08/2021 in Physics viewed by 276 persons

A boy stands at 39.2 m from a building and throws a ball which just passes through a window 19.6m above the ground. Calculate the velocity of projection of the …

A person's eye is at height of 1.5 m

Asked by admin @ 17/08/2021 in Physics viewed by 307 persons

A persons eye is a height of 1.5 m . He stands in front of a 0.3m long plane mirror which is 0.8m above the ground. The length of the …

A plastic box 1.5 m long 1.25 m wide

Asked by admin @ 17/08/2021 in Math viewed by 289 persons

A plastic box 1.5 m long, 1.25 m wide and 65 cm deep is to be made. It is opened at the top. Ignoring the thickness of the plastic sheet, …

The ratio of 90 cm to 1.5 m is

Asked by admin @ 13/08/2021 in Math viewed by 265 persons

Find the ratio of 90 cm to 1.5 m

The ratio of 1.5 m to 10 cm is

Asked by admin @ 12/08/2021 in Math viewed by 314 persons

The ratio of 1.5 m to 10 cm is? plzz give ans with method.....

Find what length of canvas 1.5 m in width

Asked by admin @ 20/08/2021 in Math viewed by 323 persons

find what length of canvas , 1.5m in width, is required to make a conical tent 48m in diameter and 7m in height. Given that 10% of canvas is used …

The diameter of roller 1.5 m long is 84cm

Asked by admin @ 20/08/2021 in Math viewed by 294 persons

The diameter of roller 1.5m long is 84cm. If it takes 100 revolutions to level a playground ,find the cost of leveling this ground at the rate of 50 paise …