Heights and Distances ( Part 3) Some Applications of Trigonometry | CBSE | Class 10 | Math
Shiksha Abhiyan
in
- 6
- Episodes
- 2020
- First episode
About Heights and Distances ( Part 3) 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. From the top of a lighthouse, the angles of depression of two ships on the opposite side of it’s are observed to be α and β . If the height of the lighthouse be h m and the line joining the ships passes through the foot of the lighthouse, show that the distance between the ships is h(tan α + tan β ) / tan α and tan β metres
22 Oct 2020
Q5. Two ships are approaching a lighthouse from opposite directions. The angles of depression of the two ships from the top of a lighthouse are 30° and 45° . If the distance between the two ships is 100m , find the height of lighthouse.
22 Oct 2020
Q4. Observed from the top of a 75 m high lighthouse (from sea level), the angles of depression of two ships are 30° and 45°. If one ship is exactly behind the other on the same side of the lighthouse, find the distance between the ships.
22 Oct 2020
Q3. A man on cliff observes a boat at an angle of depression of 30° which is approaching the shore to the point immediately beneath the observer with a uniform speed. Six minutes later, the angle of depression of the boat is found to be 60°. Find the total time taken by the boat to reach the shore.
22 Oct 2020
Q2. The angles of elevation and depression of the top and bottom of a tower from the top of a building 60 m high are 30° and 60° respectively. Find the difference between the heights of the building and the tower and also the distance between them.
22 Oct 2020
Q1. The angle of elevation of an aeroplane from a point on the ground is 60°. After a flight of 15 seconds, the angle of elevation changes to 30°. If the aeroplane is flying at a constant height of 1500V3 m, find the speed of the plane in km/hr.
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