10th Maths Chapter 6 Trigonometry Exercise 6.3

10th Standard Maths Chapter 6 Trigonometry Exercise 6.3 Guide. TN SSLC Samacheer Kalvi Guide Chapter 6 Exercise 6.3 Book Back Answers & Solutions. 10th All Subject Guide – Click Here. Class 1 to 12 All Subject Book Back Answers – Click Here.

Solution:

2. The horizontal distance between two buildings is 70 m. The angle of depression of the top of the first building, when seen from the top of the second building, is 45°. If the height of the second building is 120 m, find the height of the first building.

Solution:

∴ The height of the first building is 50m.

3. From the top of the tower 60 m high the angles of depression of the top and bottom of a vertical lamp post are observed to be 38° and 60° respectively. Find the height of the lamp post, (tan 38° = 0.7813, √3 = 1.732)

Solution:

From the figure,

∴ The height of the lamp post = CE
CE = BD = 60 – 27.064 = 32.93 m.

4. An aeroplane at an altitude of 1800 m finds that two boats are sailing towards it in the same direction. The angles of depression of the boats as observed from the aeroplane are 60° and 30° respectively. Find the distance between the two boats. (√3 = 1.732)

Solution:

Distance between the boats = 12003–√ m
= 2078.4 m

Solution:

Solution: