# NCERT Solutions for class 10 Maths Chapter 8 Exercise 8.1

NCERT Solutions for class 10 Maths Chapter 8 Exercise 8.1 Introduction to Trigonometry in PDF form free download Hindi Medium and English Medium or View in Video Format updated for new academic session 2020-21.

NCERT Solutions and Offline Apps 2020-21 are re-modified removing errors and making more simplified for the students. Solutions are appropriate for CBSE board students, MP Board, UP Board students and all the other state boards, who are following NCERT Books 2020-2021. Download (Exercise 8.1) in PDF form or use online given below.## NCERT Solutions for class 10 Maths Chapter 8 Exercise 8.1

Class: | 10 |

Subject: | Maths – गणित |

Chapter 8: | Exercise 8.1 |

### 10 Maths Chapter 8 Exercise 8.1 Solutions

NCERT Solutions for class 10 Maths Chapter 8 Exercise 8.1 Introduction to Trigonometry in ENGLISH & HINDI MEDIUM to free download in PDF. These Solutions are updated and modified according to the new CBSE Curriculum 2020-21 for CBSE board as well as UP Board students who are using NCERT Books 2020-21. Visit to Class 10 Maths Chapter 8 main page for other exercises whether download or online study.

### Class 10 Maths Exercise 8.1 Solutions

#### 10 Maths Chapter 8 Questions with Answers

1. If sin A = cos A, find the value of A. [Answer: 45]

2. If tan θ= cot (30° + θ), find the value of θ. [Answer: 30]

3. If sin θ = cos (θ – 6°), find the value of θ. [Answer: 24]

4. If cos A = 7/25, find the value of tan A + cot A. [Answer: 625/168]

##### Questions from Board Papers

1. If tan θ = 4/3, then find the value of (sin θ + cos θ)/( sin θ – cos θ).[Answer: 7]

2. If 3x = cosec θ and 3/x = cot θ then find 3(x² – 1/x²). [Answer: 1/3]

3. If x = a sin θ and y = a cos θ then find the value of x² + y². [Answer: a]

4. Find the value of cosec 70° – sec 20°. [Answer: 0]

5. Find the value of 9 sec² A – 9 tan² A. [Answer: 9]

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