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Trigonometrical Ratios of Standard Angles Class 9

ICSE

Values of the trigonometrical ratios for 0°, 30°, 45°, 60° and 90°, and their use.

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Topic-wise short notes with solved examples.Open PDFDownload
Every formula and result of the chapter on one sheet.Open PDFDownload
Daily practice problems with an answer key.Open PDFDownload

What this chapter covers

  • Where the values come from
  • Table of values
  • Evaluating expressions
  • Verifying results
  • Solving for an angle
  • Finding sides

The short notes explain each of these topics with solved examples, the formula bank lists every result on one sheet, and the DPP sheet gives practice questions with an answer key.

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