Some Applications of Trigonometry

Subject matter experts of JagranJosh have developed a chapter wise practice sets as per the relevancy of the chapter in the board exam. This practice set contains 10 questions with detailed explanations on “Chapter: Some Applications of Trigonometry” of Mathematics.

• Q1.From the top of a 20 m high tower, the angle of elevation of the top of a building is 600 and the angle of depression of its foot is 450. What is the height of the building? • Q2.A tree stands vertically on the ground. From a point on the ground which is 30 m away from the foot of the tree, the angle of elevation of the topmost point of the tree is found to be 450. What is the height of the tree? • Q3.In a Δ ABC right angled at B, sin A = 1/2, if BC = 6 cm then the value of AC is: • Q4.If a, b and c are the sides of a right angled triangle such that b < c < a, then which of the following relation is correct? • Q5.From the top of a cliff 90 m high, the angles of depression of the top and bottom of a tower observed to be 300 and 600 respectively. What is the height of the tower?   