Class 10 Maths: Introduction to Trigonometry Formulas (PDF) — All Important Formulas Free
Free class 10 maths: introduction to trigonometry formulas — all 12 key formulas on one page, downloadable as PDF for fast revision before CBSE board exams. No signup.
TL;DR: Free class 10 maths: introduction to trigonometry formulas — all 12 key formulas on one page, downloadable as PDF for fast revision before CBSE board…
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All Introduction to Trigonometry formulas for Class 10 Maths (CBSE / NCERT) on one page — fast revision for board exams. 100% free, no login, download as PDF.
Introduction to Trigonometry — Key Formulas
| Formula | Expression |
|---|---|
| Basic ratios | sin θ = opp/hyp, cos θ = adj/hyp, tan θ = opp/adj |
| Reciprocal ratios | cosec θ = 1/sin θ, sec θ = 1/cos θ, cot θ = 1/tan θ |
| Fundamental identity | sin²θ + cos²θ = 1 |
| Identity: tan | tan²θ + 1 = sec²θ |
| Identity: cot | 1 + cot²θ = cosec²θ |
| Complementary angles | sin(90°-θ) = cos θ, cos(90°-θ) = sin θ, tan(90°-θ) = cot θ |
| Ratio relationships | tan θ = sin θ/cos θ, cot θ = cos θ/sin θ |
| Special angles | 0°, 30°, 45°, 60°, 90° — memorize sin/cos/tan values |
| The 3 main ratios | sin θ = opposite/hypotenuse · cos θ = adjacent/hypotenuse · tan θ = opposite/adjacent |
| The 3 identities | sin²θ + cos²θ = 1 · 1 + tan²θ = sec²θ · 1 + cot²θ = cosec²θ |
| Standard values of sin | sin 0°=0, sin 30°=1/2, sin 45°=1/√2, sin 60°=√3/2, sin 90°=1 |
| Standard values of cos | cos 0°=1, cos 30°=√3/2, cos 45°=1/√2, cos 60°=1/2, cos 90°=0 |
FAQs
What are the most important Introduction to Trigonometry formulas for Class 10?
This sheet lists all 8 key Introduction to Trigonometry formulas from the Class 10 Maths CBSE/NCERT syllabus, ready for quick revision.
Is this Introduction to Trigonometry formula sheet free to download?
Yes — every Syllab.in formula sheet is 100% free, needs no login, and can be saved as a PDF.