Tallentex 2025 - ALLEN's Talent Encouragement Exam
Register for Tallentex '25 - One of The Biggest Talent Encouragement Exam
NCERT Solutions for Exercise 8.2 Class 10 Maths Chapter 8 Introduction to Trigonometry are discussed here. These NCERT solutions are created by subject matter expert at Careers360 considering the latest syllabus and pattern of CBSE 2023-24. Class 10 maths ex 8.2 deal trigonometric ratios and ratios of particular specific angles such as 0, 30, 45, 60 and 90 degrees. The ratios of the sides of a right triangle to their sharp angles are known as trigonometric ratios. The hypotenuse, which is the longest side of the right angle triangle, the perpendicular, which is the opposite side to the right angle triangle's angle, and the base, which is the next side to the right angle triangle's angle are the three sides of the right angle triangle.
NCERT solutions for exercise 8.2 Class 10 Maths chapter 8 Introduction to Trigonometry focuses on trigonometry and trigonometric ratios including sine, cosine, tangent, cosecant, secant and cotangent for specific angle. 10th class Maths exercise 8.2 answers are designed as per the students demand covering comprehensive, step by step solutions of every problem. Practice these questions and answers to command the concepts, boost confidence and in depth understanding of concepts. Students can find all exercise together using the link provided below.
Register for Tallentex '25 - One of The Biggest Talent Encouragement Exam
Introduction to Trigonometry class 10 chapter 8 Exercise: 8.2
Answer:
As we know,
the value of ,
Answer:
..................(i)
It is known that the values of the given trigonometric functions,
Put all these values in equation (i), we get;
Answer:
.....................(i)
We know the values of-
By substituting all these values in equation(i), we get;
Q2 Choose the correct option and justify your choice :
Answer:
Put the value of tan 30 in the given question-
The correct option is (A)
Q2 Choose the correct option and justify your choice :
Answer:
The correct option is (D)
We know that
So,
Q2 Choose the correct option and justify your choice :
is true when =
Answer:
The correct option is (A)
We know that
So,
Q2 Choose the correct option and justify your choice :
Answer:
Put the value of
The correct option is (C)
Q3 If and find
Answer:
Given that,
So, ..........(i)
therefore, .......(ii)
By solving the equation (i) and (ii) we get;
and
Q4 State whether the following are true or false. Justify your answer.
The value of increases as increases.
The value of increases as increases.
for all values of .
is not defined for
Answer:
(i) False,
Let A = B =
Then,
(ii) True,
Take
whent
= 0 then zero(0),
= 30 then value of is 1/2 = 0.5
= 45 then value of is 0.707
(iii) False,
(iv) False,
Let = 0
(v) True,
(not defined)
The link between the trigonometric ratios was also covered in the NCERT solutions for Class 10 Maths exercise 8.2. The Trigonometric ratios of particular specific angles were the focus of NCERT book exercise 8.2 Class 10 Maths. The Trigonometric ratios of some specific angles are the ratios of the sides of a right-angle triangle with regard to any of its acute angles. The trigonometric ratios of some specific angles are 0°, 30°, 45°, 60° and 90°. The following table lists the six trigonometric ratios for angles 0°, 30°, 45°, 60° and 90°.
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 |
Usage of Pythagoras theorem is also covered in Exercise 8.2 Class 10 Maths. Students can use these Introduction to Trigonometry Class 10 notes to quick revision of the important concepts discussed in this chapter.
Also, see-
cos60° sin30° + sin60°cos30°
=1/4+3/4=4/4
=1
The value of cos 3π is cos(π+2π)
=cos(π) =-1
The value of tan 45° is 1
Yes, the given assertion is correct. The sine is the ratio of the opposing side to the hypotenuse of a right-angle triangle.
Sin θ denotes the opposite side/hypotenuse
Yes, the value of cos 30° is equal to sin 60°.
The value of cosec 0° is not defined.
The Trigonometric ratios of some specific angles are the ratios of the sides of a right-angle triangle with regard to any of its acute angles.
The six trigonometric ratios are Sine , Cosine , Tangent , Cotangent , Cosecant and Secant.
NCERT solutions for Class 10 Maths chapter 8 exercise sides 8.2 consist of 4 questions and all the 4 questions are based on trigonometric ratios of specific angles.
Hello Aspirant, Hope your doing great, your question was incomplete and regarding what exam your asking.
Yes, scoring above 80% in ICSE Class 10 exams typically meets the requirements to get into the Commerce stream in Class 11th under the CBSE board . Admission criteria can vary between schools, so it is advisable to check the specific requirements of the intended CBSE school. Generally, a good academic record with a score above 80% in ICSE 10th result is considered strong for such transitions.
hello Zaid,
Yes, you can apply for 12th grade as a private candidate .You will need to follow the registration process and fulfill the eligibility criteria set by CBSE for private candidates.If you haven't given the 11th grade exam ,you would be able to appear for the 12th exam directly without having passed 11th grade. you will need to give certain tests in the school you are getting addmission to prove your eligibilty.
best of luck!
According to cbse norms candidates who have completed class 10th, class 11th, have a gap year or have failed class 12th can appear for admission in 12th class.for admission in cbse board you need to clear your 11th class first and you must have studied from CBSE board or any other recognized and equivalent board/school.
You are not eligible for cbse board but you can still do 12th from nios which allow candidates to take admission in 12th class as a private student without completing 11th.
Yes, you can definitely apply for diploma courses after passing 10th CBSE. In fact, there are many diploma programs designed specifically for students who have completed their 10th grade.
Generally, passing 10th CBSE with a minimum percentage (often 50%) is the basic eligibility for diploma courses. Some institutes might have specific subject requirements depending on the diploma specialization.
There is a wide range of diploma courses available in various fields like engineering (e.g., mechanical, civil, computer science), computer applications, animation, fashion design, hospitality management, and many more.
You can pursue diplomas at various institutions like:
Register for Tallentex '25 - One of The Biggest Talent Encouragement Exam
As per latest 2024 syllabus. Physics formulas, equations, & laws of class 11 & 12th chapters
As per latest 2024 syllabus. Chemistry formulas, equations, & laws of class 11 & 12th chapters
Accepted by more than 11,000 universities in over 150 countries worldwide
Register now for PTE & Unlock 10% OFF : Use promo code: 'C360SPL10'. Limited Period Offer!
As per latest 2024 syllabus. Study 40% syllabus and score upto 100% marks in JEE