Class 10 Maths Chapter 9 Case Based Questions - Some Applications of Trigonometry
Q1:
A straight highway leads to the foot of tower. A man standing at the top of the tower observes a car at an angle of depression of 30°, which is approaching the foot of the tower with a uniform speed. Six seconds later, the angle of depression of the car is found to be 60°. Q. Write the value of sec 30°.
Q2:
A straight highway leads to the foot of tower. A man standing at the top of the tower observes a car at an angle of depression of 30°, which is approaching the foot of the tower with a uniform speed. Six seconds later, the angle of depression of the car is found to be 60°. 
Q3:
A straight highway leads to the foot of tower. A man standing at the top of the tower observes a car at an angle of depression of 30°, which is approaching the foot of the tower with a uniform speed. Six seconds later, the angle of depression of the car is found to be 60°. 
Q4:
A straight highway leads to the foot of tower. A man standing at the top of the tower observes a car at an angle of depression of 30°, which is approaching the foot of the tower with a uniform speed. Six seconds later, the angle of depression of the car is found to be 60°. Q. Write the value of cosec 60°.
Q5:
A straight highway leads to the foot of tower. A man standing at the top of the tower observes a car at an angle of depression of 30°, which is approaching the foot of the tower with a uniform speed. Six seconds later, the angle of depression of the car is found to be 60°. Q. If the two lines are parallel; then the alternate opposite angles are ..................... .
Q6:
Form a point P on the ground the angle of elevation of the top of a 10 m tall building is 30°. A flag is hoisted at the top of the building and angle of elevation of the top of the flagstaff from P is 45°. 
Q7:
Form a point P on the ground the angle of elevation of the top of a 10 m tall building is 30°. A flag is hoisted at the top of the building and angle of elevation of the top of the flagstaff from P is 45°. Q. What is the value of tan 45°?
Q8:
Form a point P on the ground the angle of elevation of the top of a 10 m tall building is 30°. A flag is hoisted at the top of the building and angle of elevation of the top of the flagstaff from P is 45°. 
Q9:
Form a point P on the ground the angle of elevation of the top of a 10 m tall building is 30°. A flag is hoisted at the top of the building and angle of elevation of the top of the flagstaff from P is 45°. 
Q10:
Form a point P on the ground the angle of elevation of the top of a 10 m tall building is 30°. A flag is hoisted at the top of the building and angle of elevation of the top of the flagstaff from P is 45°. 
Q11:
From a point on the bridge across a river the angle of depression of the banks on opposite sides of the river 30° and 45° respectively. 
Q12:
From a point on the bridge across a river the angle of depression of the banks on opposite sides of the river 30° and 45° respectively. Q. The value of tan 45° is
Q13:
From a point on the bridge across a river the angle of depression of the banks on opposite sides of the river 30° and 45° respectively. 
Q14:
From a point on the bridge across a river the angle of depression of the banks on opposite sides of the river 30° and 45° respectively. 
Q15:
From a point on the bridge across a river the angle of depression of the banks on opposite sides of the river 30° and 45° respectively. 
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