Solution of Rig...

A boy is flying a kite with a string 50 metres long. The string makes an angle= 60^o with ground. Now after half an hour, the string length is same but the height of the kite from ground has reduced to half and angle that string makes with ground is. Find the value of cos.

In the given figure CE : EB = 2 : 3 and CD = 4 cm, then the length of AB is

A boy is standing at some distance from a 60 m tall building such that angle of elevation of the top of the building from the boy is 30^o. He moves x metre close to the building such that angle of elevation is now 60^o. Find the value of x.

Evaluate cosec²x - cot²y from the given figure.

Consider the following figure:



If the length of the AB is 20 cm, find the value of ED + BC.

ABC is a right-angled triangle making a right angle at B and the length of DC is 10 cm. Calculate the length of BC.

A boy is standing at a distance of 6 feet from a 10 feet long wall. The angles of elevation of the top of the wall from head and foot of the boy are and, respectively such that tan = 2 tan. Find the height of the boy(in feet).

Consider the following figure:

If DBC = 45^o, ABC = 60^o and BC = 20 cm, find the length of AD.

Consider the following figure:



If tan x = , tan y = , and the length of DC = 10 cm, find the length of AB.

What is the length of AD in the given figure?

Consider the following figure:



If the length of the CD is 20 cm, then what is the value of x.

If a ladder makes an angle 45^o with a wall and reaches a height of 15 feet, the length of the ladder is

Consider the following figure:



Find the length of BD.

Consider the following figure:



ABCD is a square with an area 64 cm². Find the area of DCE.

Consider the following figure:



If the length of AB = 20 cm, find the length of CD.