NCERT Solutions for class 10 Maths Chapter 8 Exercise 8.2 Introduction to Trigonometry in English and Hindi Medium.

### NCERT Solutions for class 10 Maths Chapter 8 Exercise 8.2

Class 10 Maths Ex. 8.2 solution in PDF format in Hindi Medium and English Medium for download or View in Video Format free updated for new session 2022-2023. Download Offline Apps 2022-23 of NCERT Solutions, which are prepared by expert teachers in easiest form suitable for all the students. These are based on latest CBSE Curriculum 2022-23 for CBSE as well as MP Board, UP Board students. Download (Exercise 8.2) in PDF or use online given below.

Class: 10 | Mathematics |

Chapter 8: | Exercise 8.2 |

Content: | NCERT solutions |

Medium: | English and Hindi Medium |

### 10 Maths Chapter 8 Exercise 8.2 Solutions

NCERT Solutions for class 10 Maths Chapter 8 Exercise 8.2 Introduction to Trigonometry in English & Hindi Medium to free download in PDF and option to study online also available. All of our digital study contents are free to use. These are updated time to time as per requirement of the students. Solutions are applicable for CBSE / UP Board / Uttarakhand Board / Boards using NCERT books 2022-23 and following new CBSE curriculum 2022-2023.

#### Class 10 Maths Chapter 8 Exercise 8.2 Solution in Hindi Medium Video

#### Important Questions with Answers

- 1. Express sec Î¸ in terms of cot Î¸. [Answer: âˆš(1 + cosÂ²Î¸)/cot Î¸]
- 2. Find the value of cosÎ¸cos (90 â€“ Î¸) â€“ sin Î¸sin (90 â€“ Î¸). [Answer: 0]
- 3. If sin (20 + Î¸) = cos 30Â° then find the value of Î¸. [Answer: 50]
- 4. If x = p sec Î¸ + q tan Î¸ & y = p tan Î¸ + q sec Î¸ then prove that xÂ² â€“ yÂ² = pÂ² â€“ qÂ².

##### Questions from Board Papers

- If 7sinÂ² Î¸ + 3cosÂ² Î¸ = 4 then show that tan Î¸ = 1/âˆš3.
- If Sin (A â€“ B) = 1/2, cos (A + B) = 1/2, then find the value of A and B. [Answer: A = 45, B = 15]
- Prove that: tan 1Â° tan 11Â° tan 21Â° tan 69Â° tan 79Â° tan 89Â° = 1
- If sec 4 A = cosec (A â€“ 20Â°) then find the value of A. [Answer: 22]

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### Can students solve all questions of exercise 8.2 of 10th maths easily?

If students remember the values of sin 45Â°, cos 45Â°, tan 45Â° cosec 45Â° , sec 45Â°, cot 45Â° , sin 30Â°, cos 30Â°, tan 30Â°, cosec 30Â°, sec 30Â°, cot 30Â°, sin 60Â°, cos 60Â°, tan 60Â°, cosec 60Â°, sec 60Â°, cot 60Â°, sin 90Â°, cos 90Â°, tan 90Â°, cosec 90Â°, sec 90Â°, cot 90Â°, sin 0Â°, cos 0Â°, tan0Â°, cosec 0Â°, sec 0Â°, cot 0Â° on tips then they can easily solve all questions of exercise 8.2 of 10th maths.

If they donâ€™t remember the values then exercise 8.2 becomes difficult for them.

### Which examples of exercise 8.2 of class 10 math are expected for board Exams?

There are 3 examples (example 6, 7 and 8) in exercise 8.2 of class 10 math and all the examples have equal chance to come in exams. All these examples are of different type. Example 6 is quite easy to understand than Examples 7 and 8.

### How much time needed to complete exercise 8.2 of Class 10th?

Students need maximum 1-2 days to complete exercise 8.2 (chapter 8) of class 10th mathematics if they are giving 2 hours per day. This time also depends on studentâ€™s speed, efficiency and capability.

### What are the CBSE Board Exams expected questions from exercise 8.2 of 10th Maths?

Most probably 1 mark questions like MCQ type, True or False type, Fill in the blanks type can come from exercise 8.2 (chapter 8) of class 10th mathematics. Also there are some questions (question 3) and examples (example 7 and 8) in exercise 8.2 which can come in 2 marks.