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.
Key Topics to Revise
Basic Units and Conversions
- 1 degree (1°) = 60 minutes (60')
- 1 minute (1') = 60 seconds (60'')
- Decimal degrees can be converted to degrees-minutes-seconds format
Structure of Trigonometric Tables
- Tables are divided into 12 columns total
- First column contains degrees from 0° to 90°
- Next 10 columns are headed by minutes: 0', 6', 12', 18', 24', 30', 36', 42', 48', 54'
Using Mean Differences
- Mean differences are used for interpolation between tabulated values
- Add mean difference when function value increases with angle (sin, tan, sec)
- Subtract mean difference when function value decreases with angle (cos, cot, cosec)
Practical Examples and Conversions
- Convert decimal degrees before using tables
- Work systematically from degrees to minutes to seconds
- Handle remainders carefully in each conversion step
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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.
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