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Formula Sheet

Introduction To Trigonometry — Formula Sheet

NIOS · Class 10 · Maths

8 formulas from Introduction To Trigonometry (NIOS Class 10 Maths) on one page, grouped by topic. Part of the NIOS Class 10 Maths syllabus.

42 questions24 flashcards8 formulas & key relations5 concepts

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An illustration showing various real-life scenarios where trigonometry is used, such as finding the height of a tree, the height of a kite, the width of a river, or the distance an aeroplane has trave
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8 Entries · 3 Sections

Formulas and Key Relations

Six Trigonometric Ratios

sin θ = BC/AC

cos θ = AB/AC

tan θ = BC/AB

cosec θ = AC/BC

sec θ = AC/AB

Finding Ratios from Two Sides

Pythagoras Theorem: third side is found from the other two sides

Key relations

The six ratios are sin theta = BC/AC, cos theta = AB/AC, tan theta = BC/AB, cosec theta = AC/BC, sec theta = AC/AB, and cot theta = AB/BC.

In a right triangle with sides 3, 4, and 5, for angle theta, sin theta = 3/5 and cos theta = 4/5.

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Frequently Asked Questions

What are the important topics in Introduction To Trigonometry for NIOS Class 10 Maths?
Key topics in Introduction To Trigonometry include Trigonometric Ratios in a Right Triangle, Finding Ratios from Given Sides, Relations Among Trigonometric Ratios and Standard Values, Trigonometric Identities. Study these first, then practise questions on each for the NIOS Class 10 board exam.
How many formulas are in Introduction To Trigonometry?
This sheet lists 8 formulas from Introduction To Trigonometry, grouped by topic. Learn what each symbol stands for so you can apply the formula, not just recall it.
How should I revise Introduction To Trigonometry for the NIOS Class 10 board exam?
Learn the core ideas first, then work through the 42 practice questions on Introduction To Trigonometry. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All NIOS Class 10 Maths Formula Sheet

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