# NCERT Solutions for Class 10 Maths Chapter 8 Exercise 8.2

NCERT Solutions for class 10 Maths Chapter 8 Exercise 8.2 Introduction to Trigonometry PDF in Hindi Medium and English Medium for download or View in Video Format free. Download Offline Apps of Solutions, which are prepared by expert teachers in easiest form suitable for all the students. These are based on latest CBSE Curriculum 2019-20 for CBSE as well as MP Board, UP Board students. Download (Exercise 8.2) in PDF form here or use online given below.

 Class 10: Maths – गणित Chapter 8: Introduction to Trigonometry (Exercise 8.2)

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

### Class 10 Maths Chapter 8 Exercise 8.2 Solutions in English

NCERT Solutions for class 10 Maths Chapter 8 Exercise 8.2 Introduction to Trigonometry in English 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. Click here to move Class 10 Maths Chapter 8 for other exercises whether download or online study. CLICK HERE for Hindi Medium Solutions or View in Video Format.   ### 10 Maths Chapter 8 Exercise 8.2 Sols in Video

NCERT Solutions for class 10 Maths Exercise 8.2 in video format with complete description.

### Class 10 Maths Chapter 8 Exercise 8.2 Solutions in Hindi

NCERT Solutions for class 10 Maths Chapter 8 Exercise 8.2 Introduction to Trigonometry in Hindi Medium to use as online digital contents. Solutions are applicable for CBSE / UP Board / Uttarakhand Board / Boards using NCERT books and following new CBSE curriculum 2019-20. Click here to move Class 10 Maths Chapter 8 for other exercises whether download or online study. Go back to English Medium Solutions.    Visit to English Medium or Hindi Medium or or Video Format Sols

#### Extra Important Questions with Answers for Practice

1. Express sec θ in terms of cot θ. [Answer: √(1 + cos²θ)/cot θ]
2. Find the value of cosθcos (90 – θ) – sin θsin (90 – θ). [Answer: 0]
3. If sin (20 + θ) = cos 30° then find the value of θ. [Answer: 50]
4. If x = p sec θ + q tan θ & y = p tan θ + q sec θ then prove that x² – y² = p² – q².
5. If 7sin² θ + 3cos² θ = 4 then show that tan θ = 1/√3.
6. If Sin (A – B) = 1/2, cos (A + B) = 1/2, then find the value of A and B. [Answer: A = 45, B = 15]
7. Prove that: tan 1° tan 11° tan 21° tan 69° tan 79° tan 89° = 1
8. If sec 4 A = cosec (A – 20°) then find the value of A. [Answer: 22]