Скачать или смотреть Class 9 Maths Chapter 6 Exercise 6.6 New book Punjab || ex 6.6 class 9 new book || Trigonometry

Class 9 Maths Chapter 6 Exercise 6.6 New book Punjab || ex 6.6 class 9 new book || Trigonometry

Complete playlist class 9 maths pctb new book 2025
   • 9th Class Maths New Book 2025 PCTB Punjab ...  

Chapters:
00:00:00 - Introduction
00:04:03 - Basic Concept - Angle of elevation & Depression
00:13:58 - Question 1 The angle of elevation of the top of a flag post from a point on the ground level 40 m away from the flag post is 60°. Find the height of the post.
00:20:52 - Question 2 An isosceles triangle has a vertical angle of 120° and a base 10 cm long. Find the length of its altitude.
00:28:26 - Question 3 A tree is 72 m high. Find the angle of elevation of its top from a point 100 m
away on the ground level.
00:31:42 - Question 4 A ladder makes an angle of 60° with the ground and reaches a height of 10m along the wall. Find the length of the ladder.
00:35:02 - Question 5 A light house tower is 150 m high from the sea level. The angle of depression from the top of the tower to a ship is 60°. Find the distance between the ship and the tower.
00:40:11 - Question 6 Measure of an angle of elevation of the top of a pole is 15° from a point on the ground, in walking 100 m towards the pole the measure of angle is found to be 30°. Find the height of the pole.
00:50:02 - Question 7 Find the measure of an angle of elevation of the Sun, if a tower 300 m high casts a shadow 450 m long.
00:52:30 - Question 8
00:58:50 - Question 9
01:06:58 - Question 10

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