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Revision Notes

Trigonometric Tables

ICSE · Class 10 · Mathematics

Quick revision notes for Trigonometric Tables — ICSE Class 10 Mathematics. Key concepts, formulas, and definitions for last-minute revision.

31 questions25 flashcards5 concepts

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An illustration showing the conversion process between decimal degrees and degrees, minutes, and seconds (DMS) format, with examples.
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Key Topics to Revise

1

Angle Measurement in Degrees, Minutes, and Seconds

  • 1 degree can be divided into 60 minutes.
  • 1 minute can be further divided into 60 seconds.
  • Degree, minute, and second notation is used to write angles more precisely.
2

Structure of the Trigonometric Table

  • Trigonometric tables give approximate values of sine, cosine, and tangent for angles between 0° and 90°.
  • The values are correct up to four places of decimals.
  • Each trigonometric table is divided into 12 columns.
3

Using Mean Differences

  • The mean difference is added when the function value increases as θ increases.
  • The mean difference is subtracted when the function value decreases as θ increases.
  • Sine, secant, and tangent increase with θ, so their mean difference is added.
4

Important Facts to Remember

  • The first column on the left contains degrees from 0° to 90°.
  • The table has ten minute columns.
  • The minute columns are headed by 0', 6', 12', 18', 24', 36', 42', 48', and 54'.

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Full Notes

Key Concepts

An angle can be divided intoA decimal degree is first splitA trigonometric table contains approximate valuesThe first column on the extremeMean difference columns are used

Frequently Asked Questions

What are the important topics in Trigonometric Tables for ICSE Class 10 Mathematics?
Trigonometric Tables covers several key topics that are frequently asked in ICSE Class 10 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Trigonometric Tables — ICSE Class 10 Mathematics?
Understand the core concepts first, then work through the 31 practice questions available for this chapter. Revise formulas and 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 22 chapters — ICSE Class 10 Mathematics Revision Notes

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