Heights and Distances (Part 4) Some Applications of Trigonometry | CBSE | Class 10 | Math
Shiksha Abhiyan
in
- 6
- Episodes
- 2020
- First episode
About Heights and Distances (Part 4) Some Applications of Trigonometry | CBSE | Class 10 | Math
This podcast is a part of a series for, CBSE Class 10 Maths. We recommend that you take a look at our YouTube channel, to enter this new world of virtual learning at its best. || Youtube: Shiksha Abhiyan || t.ly/dN9j8 ||
- Publisher
- Shiksha Abhiyan
- Category
- education
- Language
- hi
- Explicit
- No
- First episode
- 22 Oct 2020
- Latest episode
- 22 Oct 2020
Latest episodes
6 episodes in the feed.
22 Oct 2020
Q6. A man standing on the deck of a ship, which is 10m above the water level, observes the angle of elevation of the top of a hill as 60°, and the angle of depression of the base of the hill as 30°. Find the distance of the hill from the ship and the height of the hill.
22 Oct 2020
Q5. An aeroplane when flying at a height of 3000 m from the ground passes vertically above another aeroplane at an instant when the angles of elevation of the two planes from the same point on the ground are 60° and 45° respectively. Find the vertical distance between the aeroplanes at that instant.
22 Oct 2020
Q4. A boy whose eye level is 1.3 m from the ground, spots a balloon moving with the wind in a horizontal line at some height from the ground. The angle of elevation of the balloon from the eyes of the boy at an instant is 60°. After 2 seconds, the angle of elevation reduces to 30°. If the speed of the wind is 29V3 m/s then find the height of the balloon from the ground.
22 Oct 2020
Q3. A round balloon of radius r subtends an angle α at the eye of the observer while the angle of elevation of its centre is β . Prove that the height of the centre of the balloon is (rsin β csc α /2)
22 Oct 2020
Q2. The angle of elevation of a cloud from a point 60m above the surface of the water of a lake is 30° and the angle of dpression of it's shadow in water of lake is 60°. Find the height of the cloud from the surface of water.
22 Oct 2020
Q1. The angle of elevation of a cloud from a point h meters above a lake is and the angle of depression of its reflection in the lake is β . prove that the height of the cloud is h (tan β + tan α ) (tan β - tan α ) m.
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