Introduction To Trigonometry Class 10 NCERT Solution
NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry explains the relation between the angles and sides of a right angle triangle. NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry are a valuable resource for students as they assist in both understanding the concepts and performing well on the CBSE Class 10 board examination. Introduction to trigonometry class 10 solutions are created by subject experts and include answers for all questions in the textbook. They are also updated to align with the latest CBSE Syllabus for 2022-23 and exam pattern.
NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry In addition to providing a strong foundation for the concepts in this chapter, the NCERT Books class 10 trigonometry solutions also allow students to clear their doubts and grasp the fundamentals. They also provide helpful guidance for solving challenging problems in each exercise of Chapter 8 Introduction to Trigonometry.
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NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry
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Introduction to Trigonometry Class 10 NCERT Solutions - Important Formuale
Arc Length in a Circle:
l = rθ
θ = l/r
Conversion Between Radian and Degree Measures:
Trigonometric Ratios for Right Triangles:
In a right triangle with an angle 'θ':
sin θ = Opposite/Hypotenuse
cos θ = Adjacent/Hypotenuse
tan θ = Opposite/Adjacent
cosec θ = Hypotenuse/Opposite
sec θ = Hypotenuse/Adjacent
cot θ = Adjacent/Opposite
Reciprocal Trigonometric Ratios:
sin θ = 1/(cosec θ)
cosec θ = 1/(sin θ)
cos θ = 1/(sec θ)
sec θ = 1/(cos θ)
tan θ = 1/(cot θ)
cot θ = 1/(tan θ)
Trigonometric Ratios of Complementary Angles:
For an angle 'θ', the trigonometric ratios of its complementary angle (90° – θ) are:
sin (90° – θ) = cos θ
cos (90° – θ) = sin θ
tan (90° – θ) = cot θ
cot (90° – θ) = tan θ
sec (90° – θ) = cosec θ
cosec (90° – θ) = sec θ
Trigonometric Identities:
sin2 θ + cos2 θ = 1
sin2 θ = 1 – cos2 θ
cos2 θ = 1 – sin2 θ
cosec2 θ – cot2 θ = 1
cot2 θ = cosec2 θ – 1
sec2 θ – tan2 θ = 1
tan2 θ = sec2 θ – 1
Free download NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry PDF for CBSE Exam.
NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry (Intext Questions and Exercise)
Q5 Given calculate all other trigonometric ratios.
Answer:
We have,
It means the Hypotenuse of the triangle is 13 units and the base is 12 units.
Let ABC is a right-angled triangle in which B is 90 and AB is the base, BC is perpendicular height and AC is the hypotenuse.
By using Pythagoras theorem,
BC = 5 unit
Therefore,
Q1 Evaluate the following :
Answer:
..................(i)
It is known that the values of the given trigonometric functions,
Put all these values in equation (i), we get;
Q1 Evaluate the following :
Answer:
.....................(i)
We know the values of-
By substituting all these values in equation(i), we get;
Trigonometry chapter class 10 ncert solutions Excercise: 8.3
Q1 Evaluate :
Answer:
We can write the above equation as;
By using the identity of
Therefore,
So, the answer is 1.
Q1 Evaluate :
Answer:
The above equation can be written as ;
.........(i)
It is known that,
Therefore, equation (i) becomes,
So, the answer is 1.
Q1 Evaluate :
Answer:
The above equation can be written as ;
....................(i)
It is known that
Therefore, equation (i) becomes,
So, the answer is 0.
Q1 Evaluate :
Answer:
This equation can be written as;
.................(i)
We know that
Therefore, equation (i) becomes;
= 0
So, the answer is 0.
Introduction to trigonometry class 10 solutions Excercise: 8.4
Q3 Evaluate :
Answer:
....................(i)
The above equation can be written as;
(Since )
Features of Trigonometry Class 10 NCERT Solutions
Unit 5 "Trigonometry" holds 12 marks out of 80 marks in the maths paper of CBSE board examination and we can expect 2-3 questions from this chapter of total around 8 marks. There is a total of 4 exercises with 27 questions in the NCERT solutions for class 10 maths chapter 8. These NCERT solutions for class 10 maths chapter 8 Introduction to Trigonometry are designed to provide assistance for homework and for preparing the board examinations.
Trigonometry Class 10 Solutions - Exercise Wise
Trigonometry Class 10 Topic-
The trigonometric ratios of the angle A in right triangle ABC are defined as follows-
The values of all the trigonometric ratios of 0°, 30°, 45°, 60°, and 90° are-
| | | | | |
Sin A | 0 | | | | 1 |
Cos A | 1 | | | | 0 |
Tan A | 0 | | 1 | | Not defined |
Cosec A | Not defined | 2 | | | 1 |
Sec A | 1 | | | 2 | Not defined |
Cot A | Not defined | | 1 | | 0 |
NCERT Solutions for Class 10 Maths - Chapter Wise
Benefits of NCERT Solutions for Class 10 Maths Chapter 8
These Class 10 Maths Chapter 8 NCERT solutions are prepared by the experts. Hence these solutions are 100 per cent reliable.
The Trigonometry Class 10 will be beneficial for Class 10 board exams and for higher studies as well.
NCERT chapter 8 Maths Class 10 solutions will help in building the basic concepts of trigonometry and bring forth some easy ways to solve the questions.
NCERT Solutions of Class 10 - Subject Wise
How to use NCERT solutions for Class 10 Maths chapter 8 Introduction to Trigonometry?
Firstly, learn all the concepts given in the NCERT book. Memorise all the trigonometric ratios, angle values, and trigonometric identities.
Now practice exercises by referring to the NCERT Class 10 Maths solutions chapter 8.
As the NCERT Solutions for Class 10 Maths Chapter 8 PDF Download is not available. So you can save the webpage to practice the solutions offline.
After doing all these you can practice the last 5 years question papers of board examinations.
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