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Looking at their performances, she found that a few students got under 20 marks and a few got 70 marks or above. So she decided to group them into intervals of varying sizes as follows 0 � 20, 20 � 30, �, 60 � 70, 70 � To know the opinion of the students about the subject statistics, a survey of students was conducted.
The data is recorded in the following table Find the probability that a student chosen at random i likes statistics, ii does not like it. The distance in km of 40 engineers from their residence to their place of work were found as follows What is the empirical probability that an engineer lives i less than 7 km from her place of work? Activity: Note the frequency of two-wheelers, three-wheelers Byjus Maths Class 8 Chapter 9 Visa and four-wheelers going past during a time interval, in front of your school gate.
Find the probability that any one vehicle out of the total vehicles you have observed is a two-wheeler? Solution: It is an activity. Students can do it themselves. Activity : Ask all the students in your class to write a 3-digit number. An inclinometer or Clinometer is a device usually used for measuring the angle of elevation and the angle of depression.
Let us recall some trigonometric ratios which help to solve the questions based on class 10 maths Chapter 9. Trigonometry Ratios. The ratio of the sides of a right-angle triangle in terms of any of its acute angle triangle is known as the trigonometric ratio of that specific angle. Sine - The sine of an angle is stated as the ratio of the opposite side perpendicular side to that angle to the hypotenuse side.
Cosine- The cosine of an angle is stated as the ratio of the adjacent side to that angle to the hypotenuse side. Tangent - The tan of an angle is stated as the ratio of the opposite side perpendicular side to that angle to the side adjacent to that angle. Cosecant- It is the reciprocal of sine. Secant- It is the reciprocal of cosine.
Cotangent- It is the reciprocal of tangent. The following trigonometry ratio table is used to calculate the questions based on applications of trigonometry class 10 NCERT solutions.
Sin C. Cos C. Tan C. Not defined. Cosc C. Sec C. Cot C. Now, you must have understood all the important topics and terms covered in each section of class 10 maths chapter 9. Perfect understanding of NCERT class 10 chapter 9 Introduction helps you to focus on some points such as the weightage of the chapter, important questions that can be asked in the examination, types of questions that can be appeared in your, etc.
This will help you to solve the exam more confidently and also ensures you that you can finish your exam within a time-duration. As, there is a proverb that says "Practice makes the men perfect". It tells us the importance of practicing continuously in any subject to learn anything.
Continuous practice is a must to learn any of the subjects. Practicing class 10 maths Chapter 9 NCERT solutions designed by Vedantu experts will bring accuracy and confidence in you as they are designed according to the caliber of the students. It helps you to increase the speed of solving your problems and also bring more accuracy in you.
With practicing NCERT questions more and more, you will be aware of the types of questions that can be asked in the examination. This will help you to solve your exam paper more confidently. Practicing not merely enhances your conceptual understanding but also enhances your logical reasoning.
Most of the time the questions asked in the examination are repeated and solving the previous questions helps you to solve the questions speedily and accurately in the exam.
The solutions are designed by the subject experts of Vedantu. Chapter-wise questions and solutions are easily accessible. Special guidance for the students preparing for their board examinations. Exercise questions are easily accessible. The solutions are well-explained in the comprehensive method. NCERT Solution for class 10 plays an important role in shaping the future of the students as the grades which the Byjus Maths Class 8 Chapter 2 Sum students will score will shape the future of the student.
The NCERT solution prepared by the professionals of Vedantu is a one-stop solution for all your queries related to class 10 maths chapter 9.
Detailed explanation and stepwise solutions for each question prepared by the experts will help you to understand the concept in a better way. The NCERT solutions prepared by the experts of Vedantu provides excellent material for the student to practice and make the learning process more effective.
Solutions are framed keeping in mind the age of the students. The content of the topic is pointed, brief, and straightforward. Complex questions are divided into small parts and well-explained to save the students from taking the unnecessary strain.
Every question is explained with the relevant image to understand the question precisely. The solutions are designed under the latest syllabus and CBSE guidelines. The aim to provide the solution is to help the students to solve each question given in the board exams in no time. Why are Some Applications of Trigonometry Important? Class 10 Chapter 9 some application of trigonometry is an important topic to discuss as it tells how trigonometry is used to find the height and distance of different objects such as the height of the building, the distance between the Earth and Planet and Stars, the height of the highest mountain Mount Everest, etc.
To solve the questions based on some applications of trigonometry class 10, it is necessary to remember trigonometry formulas, trigonometric relations, and values of some trigonometric angles. The following are the concepts covered in the 'height and distance' Some applications of trigonometry.
To measure the height of big towers or big mountains. To determine the distance of the shore from the sea. To find out the distance between two celestial bodies. This chapter has a weightage of 12 marks in class 10 Maths Cbse board exams. One question can be expected from this chapter. The questions will be allocated with 1 mark, 2 marks, 3 marks or 4 marks.
Discussion about the sections, exercise, and type of questions given in the exercise. The exercise aims to test your knowledge and how deeply you understood each formula and concept of the topic. The numerical questions given in this chapter are based on some applications of trigonometry. To make you understand the topic and related concept, solved numerical problems are also given. Stepwise solutions are given for each of the solved examples.
It will help you to understand which concept and formula will be used to solve the given questions accurately. This section gives an introduction to some applications of trigonometry. It tells you how trigonometry is used by different scholars throughout the world and its uses in different fields. It also tells you the way trigonometry is used to find the height and distance of different objects without actually measuring them.
Easy and simplified solutions are given, so that student can understand easily. Study Material for Class 9 Maths. Important Notes on 9th Maths Chapter 7 Rules for Congruence of Triangle: Two triangles are congruent, if sides and angles of one triangle are equal to the corresponding sides and angles of the other triangle.
RHS Right angle � Hypotenuse � Side Congruence Rule: Two right triangles are congruent, if the hypotenuse and one side of one triangle are equal to hypotenuse and one side of the other triangle. ASA Angle � Side � Angle Congruence Rule: Two triangles are congruent, if two angles and the included side of one triangle are equal to two angles and the included side of the other triangle. SAS Side � Angle � Side Congruence Rule: Two triangles are congruent, if two sides and the included angle of one triangle are equal to two sides and the included angle of the other triangle.
What are the properties of a Triangle? Define a Triangle.
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