Students can practice 10th Class Maths Textbook SSC Solutions Telangana Chapter 12 Applications of Trigonometry InText Questions to get the best methods of solving problems.
TS 10th Class Maths Solutions Chapter 12 Applications of Trigonometry InText Questions
Do This
Question 1.
Draw diagram for the following situations :
i) A person is flying a kite at an angle of elevation a and the length of thread from his hand to kite is ‘l’.
ii) A person observes two banks of a river at angles of depression θ1 and θ2 (θ1 < θ2) from the top of a tree of height ‘h’ which is at a side of the river. The width of the river is ‘d’. (AS5) (Page No. 297)
Solution:
i)
In the figure
A is the position of the person.
B is the position of the kite.
AB is the length of thread.
ii)
In the figure,
‘D’ is the position of person
CD is the height of the tree
AB is the width of the river
Angles of depression are θ1 and θ2.
Think – Discuss
Question 1.
You are observing top of your school building at an angle of elevation a from a point which is at ‘d’ meter distance from foot of the building. Which trigonometric ratio would you like to consider to find the height of the building.
(AS3) (Page No. 297)
Solution:
Rough sketch
I would like to use the “Tangent” to find the height of the building by the “Rough sketch”.
Question 2.
A ladder of length ‘x’ meter is leaning against a wall making angle θ with the ground. Which trigonometric ratio would you like to consider to find the height of the point on the wall at which the ladder is touching ? (AS3) (Page No. 297)
Solution:
I would like to use the “sin θ” to find the height of the point on the wall at which the ladder is touching.