NCERT Class 10
The angle of elevation of the top of the building from the foot of the tower is 30 and the angle of the top of the tower from the foot of the building is 60. If the tower is 50 m high, find the height of the building.
05
Oct
The angle of elevation of the top of the building from the foot of the tower is 30 and the angle of the top of the tower from the foot of the building is 60. If the tower is 50 m high, find the height of the building. find the height of the building. The [...]
A statue 1.6 m tall, stands on the top of the pedestal. From a point on the ground, the angle of elevation of the top of the statue is 60° and from the same point the angle of elevation of the top of the pedestal is 45°. Find the height of the pedestal
05
Oct
A statue 1.6 m tall, stands on the top of the pedestal. From a point on the ground, the angle of elevation of the top of the statue is 60° and from the same point the angle of elevation of the top of the pedestal is 45°. Find the height of the pedestal A statue [...]
From a point on the ground the angles of elevation of the bottom and top of a transmission tower fixed at the top of 20 m high building are 45 degree and 60 degree , respectively. Find the height of the transmission tower.
05
Oct
From a point on the ground the angles of elevation of the bottom and top of a transmission tower fixed at the top of 20 m high building are 45 degree and 60 degree , respectively. Find the height of the transmission tower. From a point on the ground the angles of elevation of the [...]
A kite is flying at a height of 60m above the ground. The string attached to the kite is temporarily tied to a point on the ground.
05
Oct
A kite is flying at a height of 60m above the ground. The string attached to the kite is temporarily tied to a point on the ground. A kite is flying at a height of 60m above the ground. The string attached to the kite is temporarily tied to a point on the ground. October [...]
The angle of elevation from top of tower from point on ground which is 30m away from foot of tower is 30 degree. Find the height of the tower.
05
Oct
The angle of elevation from top of tower from point on ground which is 30m away from foot of tower is 30 degree. Find the height of the tower. The angle of elevation from top of tower from point on ground which is 30m away from foot of tower is 30 degree. Find the height [...]
A contractor plans to install two slides for the children to play in a park. For the children below the age of 5 years, she prefers to have a slide whose top is at a height of 1.5 m, and is inclined at an angle of 30 degree to the ground, whereas for elder children, she wants to have a steep slide at a height of 3m, and inclined at an angle of 60 degree to the ground. What should be the length of the slide in each case?
05
Oct
A contractor plans to install two slides for the children to play in a park. For the children below the age of 5 years, she prefers to have a slide whose top is at a height of 1.5 m, and is inclined at an angle of 30 degree to the ground, whereas for elder children, [...]
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A contractor plans to install two slides for the children to play in a park. For the children below the age of 5 years ,
and inclined at an angle of 60 degree to the ground. What should be the length of the slide in each case? ,
and is inclined at an angle of 30 degree to the ground ,
she prefers to have a slide whose top is at a height of 1.5 m ,
she wants to have a steep slide at a height of 3m ,
whereas for elder children ,
A tree breaks due to storm and the broken part bends so that the top of the tree touches the ground making an angle of 30 degree with the ground. The distance between the foot of the tree to the point where the top touches the ground is 8 m. Find the height of the tree.
05
Oct
A tree breaks due to storm and the broken part bends so that the top of the tree touches the ground making an angle of 30 degree with the ground. The distance between the foot of the tree to the point where the top touches the ground is 8 m. Find the height of the [...]
A circus artist is climbing a 20 m long rope, which is tightly stretched and tied from the top of a vertical pole to the ground. Find the height of the pole if the angle made by the rope with the ground level is 30 degree.
05
Oct
A circus artist is climbing a 20 m long rope, which is tightly stretched and tied from the top of a vertical pole to the ground. Find the height of the pole if the angle made by the rope with the ground level is 30 degree. A circus artist is climbing a 20 m long [...]
Prove that sin theta – cos theta + 1 / sin theta + cos theta – 1 = 1/sec theta – tan theta, using the identity sec^2 theta = 1 + tan^2 theta.
05
Oct
Prove that sin theta – cos theta + 1 / sin theta + cos theta – 1 = 1/sec theta – tan theta, using the identity sec^2 theta = 1 + tan^2 theta. Prove that sin theta - cos theta + 1 / sin theta + cos theta - 1 = 1/sec theta - tan [...]
Prove that: cot A – cos A / cot A + cos A = cosec A – 1 / cosec A + 1
05
Oct
Prove that: cot A – cos A / cot A + cos A = cosec A – 1 / cosec A + 1 Prove that: cot A - cos A / cot A + cos A = cosec A - 1 / cosec A + 1 October 5, 2020 Category: Chapter 8 - Introduction to [...]