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Aug 26, 2013

Prove that. tan/1-cot+cot/1-tan=(1+sec cosec)

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Sabu

Mar 18, 2015

In a family of 3 children, the probability of having at least one boy is

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Sabu

Mar 10, 2015

The angle of elevation of an aeroplane from a point on the ground is 60Â° .After a flight of 30 sec the angle of elevation becomes 30Â°. If the aeroplane is flying at a constant height of 3000âˆš3 m, find the speed of the aeroplane.

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Fakkufakir Mohammed Mubarak Shaik

Feb 3, 2015

If the angle of elevation of a cloud from a point 'h' meter above a lake is Î± and the angle of depressin of reflection in the lake is Î² . Prove that the distance of the cloud from the observer is 2h secant Î± / tan Î² - tan Î±.

Sarthak Chaddha

Oct 12, 2013

The angle of elevation of a cloud from a point 60m above a lake is 30â—¦ and the angle of depression

of the reflection of the cloud in the lake is 60Â° . Find the height of the cloud from the surface of the

lake.

of the reflection of the cloud in the lake is 60Â° . Find the height of the cloud from the surface of the

lake.

This answer has an image. Please click on the question to read more.

Sabu

Mar 10, 2015

If the height of the vertical pole is equal to the length of its shadow on the ground. Find angle elevation of the sun is

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Sabu

Mar 8, 2015

If the height of a vertical pole is root 3 times the length of its shadow on the ground then find the angle of elevation of the sun at that time.

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Rahul

Jan 3, 2014

A pole 5m high is fixed on the top of a tower . the angle of elevation of the ploe observed from a point A on the ground is 60Â° and the angleof depression of point A from the top of the tower is 45Â° . find the height of the tower.

This answer has an image. Please click on the question to read more.

Greeny joby

Nov 4, 2013

If the angle of elevation of a cloud from a point 'h' metres above a lake is Î± and the angle of depression of its reflection in the lake is Î², prove that the height of thecloud is h{1+r/1-r} where r = tan Î± / tan Î² .

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Ajmal

Nov 20, 2013

A fire in a building B is reported on the telephone to two fire stations P and Q, 10 km apart from each other on a straight road. P observes that the fire is at angle of 60o to the road and Q observe

This answer has an image. Please click on the question to read more.

Anjali

Aug 26, 2013

Prove that. tan/1-cot+cot/1-tan=(1+sec cosec)

This answer has an image. Please click on the question to read more.

Sabu

Mar 18, 2015

In a family of 3 children, the probability of having at least one boy is

This answer has an image. Please click on the question to read more.

Sabu

Mar 10, 2015

The angle of elevation of an aeroplane from a point on the ground is 60Â° .After a flight of 30 sec the angle of elevation becomes 30Â°. If the aeroplane is flying at a constant height of 3000âˆš3 m, find the speed of the aeroplane.

This answer has an image. Please click on the question to read more.

Fakkufakir Mohammed Mubarak Shaik

Feb 3, 2015

If the angle of elevation of a cloud from a point 'h' meter above a lake is Î± and the angle of depressin of reflection in the lake is Î² . Prove that the distance of the cloud from the observer is 2h secant Î± / tan Î² - tan Î±.

Sarthak Chaddha

Oct 12, 2013

The angle of elevation of a cloud from a point 60m above a lake is 30â—¦ and the angle of depression

of the reflection of the cloud in the lake is 60Â° . Find the height of the cloud from the surface of the

lake.

of the reflection of the cloud in the lake is 60Â° . Find the height of the cloud from the surface of the

lake.

This answer has an image. Please click on the question to read more.

Sabu

Mar 10, 2015

If the height of the vertical pole is equal to the length of its shadow on the ground. Find angle elevation of the sun is

This answer has an image. Please click on the question to read more.

Sabu

Mar 8, 2015

If the height of a vertical pole is root 3 times the length of its shadow on the ground then find the angle of elevation of the sun at that time.

This answer has an image. Please click on the question to read more.

Rahul

Jan 3, 2014

A pole 5m high is fixed on the top of a tower . the angle of elevation of the ploe observed from a point A on the ground is 60Â° and the angleof depression of point A from the top of the tower is 45Â° . find the height of the tower.

This answer has an image. Please click on the question to read more.

Greeny joby

Nov 4, 2013

If the angle of elevation of a cloud from a point 'h' metres above a lake is Î± and the angle of depression of its reflection in the lake is Î², prove that the height of thecloud is h{1+r/1-r} where r = tan Î± / tan Î² .

This answer has an image. Please click on the question to read more.

Ajmal

Nov 20, 2013

A fire in a building B is reported on the telephone to two fire stations P and Q, 10 km apart from each other on a straight road. P observes that the fire is at angle of 60o to the road and Q observe

This answer has an image. Please click on the question to read more.