NCERT Solutions for class 10 Maths Chapter 8 Exercise 8.3 Introduction to Trigonometry PDF in Hindi Medium and English Medium for CBSE as well as UP Board students who are following CBSE guidelines and following CBSE Syllabus from 2018-19 for their upcoming exams in March 2019. Download (Exercise 8.3) here in PDF format or the digital contents are given below to use online.

## NCERT Solutions for class 10 Maths Chapter 8 Exercise 8.3

### Class 10 Maths Chapter 8 Exercise 8.3 Solutions in English

NCERT Solutions for class 10 Maths Chapter 8 Exercise 8.3 Introduction to Trigonometry in ENGLISH MEDIUM to use online without downloading. If you want do download Exercise 8.3, the link to download in PDF is given in the first paragraph of this page. Click here to move Class 10 Maths Chapter 8 for other exercises whether download or online study. CLICK HERE for Hindi Medium Solutions.

### Class 10 Maths Chapter 8 Exercise 8.3 Solutions in Hindi

NCERT Solutions for class 10 Maths Chapter 8 Exercise 8.3 Introduction to Trigonometry in HINDI MEDIUM free to use without any LOGIN or PASSWORD so that you have the liberty to use contents without any hesitation. Solutions are updated for CBSE Exams of March 2019 for CBSE and UP Board. Click here to move Class 10 Maths Chapter 8 for other exercises whether download or online study. Go back to English Medium Solutions.

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#### Extra Questions on Trigonometry for Practice

- If tan (3x – 15) = 1 then find the value of x. [Answer: 20]
- Prove that: tan cot A/(1 – cot A) + cot A/(1 – tan A) = 1 + tan A + cot A.
- Prove that: (sin θ + cosec θ)² + (cos θ + sec θ)² = 7 + tan² θ + cot² θ
- Prove that: sec A (1 – sin A) (sec A + tan A) = 1.

- If cos B + sin B = √2 cos B, then show that cos B – sin B = √2 sin B.
- If tan A + sin A = m, tan A – sin A = n, then show that m² – n² = 4√(mn).
- If sec A = x = 1/4x, prove that sec A + tan A = 2x or 1/2x.
- If sin α + sin² α = 1, prove that cos² α + (cos² α)² = 1.

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