# Class 10th maths science group Chapter 7 Exercise 7.2

## Class 10th maths science group Chapter 7 Exercise 7.2

Class 10th maths science group Chapter 7 Exercise 7.211/11/2017 02:38:06 pm - notes - 10th - Mathematics Science Group - administrator
This series of lecture is about class 10th maths book exercise 7.2. You will get the lectures and notes about all the exercises of maths 9th, 10th, 11th, 12th. These lectures are related to Punjab Textbook Board PTB, Federal Board, Rawalpindi Board and all other educational boards of Punjab.
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This Lecture includes complete notes of Exercise 7.2 Chapter 7 Introduction to Trigonometry from class 10th maths (science group) Punjab Text Book Board. For FBISE, RWPBISE and all other boards like Lahore Board, Sargodha Board etc.
In this Lecture you will go through following Topics:
1. Introduction to Trigonometry
i) Sector of a Circle
a) Arc
b) Segment of a circle
c) Sector of a circle
ii) To establish the rule l = r theta.
iii) Area of a circular sector

Select a Question from the list bellow to see the video of that Question directly (works best in Google Chrome Browser):
Q. 1:	Find theta, when:
Q. 2:	Find l, when:
Q. 3:	Find r, when:
Q. 4:	In a circle of radius 12m, find the length of an arc which subtends a central angle theta=1.5radian.
Q. 5:	In a circle of radius 10m, find the distance travelled by a point in moving on this circle if the point makes 3.5 revolutions.
Q. 6:	What is the circular measure of the angle between the hands of the watch at 3 o'clock?
Q. 7:	What is the length of the arc APB?
Q. 8:	In a circle of radius 12cm, how long an arc subtends a central angle of 84o.
Q. 9:	Find the area of the sectors OPR.
Q. 10:	Find area of the sector inside a central angle of 20o in a circle of radius 7m.
Q. 11:	Sehar is making a skirt. Each panel of this skirt is of the shape shown shaded in the diagram. How much material (cloth) is required for each panel?
Q. 12:	Find the area of the sector with central angle of pi/5 radian in a circle of radius 10cm.
Q. 13:	The area of the sector with a central angle theta in a circle of radius 2m is 10 square meter. Find theta in radians.

Class 10th maths science group Chapter 7 Exercise 7.2 All exercises Full Solutions
Class 10th maths science group Chapter 7 Exercise 7.2 Notes
Class 10th maths science group Chapter 7 Exercise 7.2 Video lecture
Class 10th maths science group Chapter 7 Exercise 7.2 All Questions pdf Notes


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Class 10th maths science group Chapter 7 Exercise 7.1 - Notes, Solutions and Video Lectures11/11/2017 02:31:16 pm - notes - 10th - Mathematics Science Group - This series of lecture is about class 10th maths book exercise 7.1. You will get the lectures and notes about all the exercises of maths 9th, 10th, 11th, 12th. These lectures are related to Punjab Textbook Board PTB, Federal Board, Rawalpindi Board and all other educational boards of Punjab.
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Class 10th maths science group Chapter 7 Exercise 7.3 - Notes, Solutions and Video Lectures11/11/2017 02:42:09 pm - notes - 10th - Mathematics Science Group - This series of lecture is about class 10th maths book exercise 7.3. You will get the lectures and notes about all the exercises of maths 9th, 10th, 11th, 12th. These lectures are related to Punjab Textbook Board PTB, Federal Board, Rawalpindi Board and all other educational boards of Punjab.




Maths Cheat Sheet

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