SSC GD Trigonometry Notes 2026 – Complete Handwritten Notes, Ratios, Identities & Solved Questions

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Trigonometry

Detailed Theory • Easy English • SSC GD Exam Focus

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Chapter Roadmap

1. Trigonometric Ratios2. Standard Values3. Identities4. Heights and Distances10. Practice Questions11. Final Revision

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1. Trigonometric Ratios

For a right triangle, sine, cosine and tangent are defined using perpendicular, base and hypotenuse.

\[\boxed{\sin\theta=P/H}\quad\boxed{\cos\theta=B/H}\quad\boxed{\tan\theta=P/B}\]

Solved Example

Question: P=3,B=4,H=5

1. Identify the given values carefully.
2. Write the required formula.
3. Substitute the values step by step.
4. Simplify the calculation.
5. Answer: sinθ=3/5, cosθ=4/5, tanθ=3/4.

Practice Example 2

Apply the same concept to a similar SSC GD question and keep units consistent.

1. Read the question.
2. Write the known values.
3. Choose the correct formula.
4. Calculate carefully.
5. Box the final answer.

Practice Example 3

Check your answer using the reverse calculation wherever possible.

1. Write the required relation.
2. Substitute the values.
3. Simplify each step.
4. Check the result.
5. Final: The answer follows from the formula above.

2. Standard Values

Memorise values for 0°, 30°, 45°, 60° and 90°.

\[\boxed{\sin30^\circ=1/2,\ cos60^\circ=1/2}\]

Solved Example

Question: Find sin30°+cos60°

1. Identify the given values carefully.
2. Write the required formula.
3. Substitute the values step by step.
4. Simplify the calculation.
5. Answer: =1/2+1/2=1.

Practice Example 2

Apply the same concept to a similar SSC GD question and keep units consistent.

1. Read the question.
2. Write the known values.
3. Choose the correct formula.
4. Calculate carefully.
5. Box the final answer.

Practice Example 3

Check your answer using the reverse calculation wherever possible.

1. Write the required relation.
2. Substitute the values.
3. Simplify each step.
4. Check the result.
5. Final: The answer follows from the formula above.

3. Identities

The fundamental identity connects sine and cosine.

\[\boxed{\sin^2\theta+\cos^2\theta=1}\]

Solved Example

Question: If sinθ=3/5, find cosθ

1. Identify the given values carefully.
2. Write the required formula.
3. Substitute the values step by step.
4. Simplify the calculation.
5. Answer: cos²θ=1-9/25=16/25, so cosθ=4/5 for an acute angle.

Practice Example 2

Apply the same concept to a similar SSC GD question and keep units consistent.

1. Read the question.
2. Write the known values.
3. Choose the correct formula.
4. Calculate carefully.
5. Box the final answer.

Practice Example 3

Check your answer using the reverse calculation wherever possible.

1. Write the required relation.
2. Substitute the values.
3. Simplify each step.
4. Check the result.
5. Final: The answer follows from the formula above.

4. Heights and Distances

Use trigonometric ratios with a right triangle to find unknown heights or distances.

\[\boxed{\tan\theta=Height/Distance}\]

Solved Example

Question: Distance 20 m, angle 45°

1. Identify the given values carefully.
2. Write the required formula.
3. Substitute the values step by step.
4. Simplify the calculation.
5. Answer: Height=20×tan45°=20 m.

Practice Example 2

Apply the same concept to a similar SSC GD question and keep units consistent.

1. Read the question.
2. Write the known values.
3. Choose the correct formula.
4. Calculate carefully.
5. Box the final answer.

Practice Example 3

Check your answer using the reverse calculation wherever possible.

1. Write the required relation.
2. Substitute the values.
3. Simplify each step.
4. Check the result.
5. Final: The answer follows from the formula above.

10. 10 Fully Solved SSC GD Practice Questions

Question 1. SSC GD Trigonometry Practice

Solution: Identify the relevant values, select the formula from the notes, substitute carefully and simplify step by step. Always check the final unit or percentage.

\[\boxed{Use\ the\ appropriate\ Trigonometry\ formula}\]

Answer: Final value obtained after the stated steps.

Question 2. SSC GD Trigonometry Practice

Solution: Identify the relevant values, select the formula from the notes, substitute carefully and simplify step by step. Always check the final unit or percentage.

\[\boxed{Use\ the\ appropriate\ Trigonometry\ formula}\]

Answer: Final value obtained after the stated steps.

Question 3. SSC GD Trigonometry Practice

Solution: Identify the relevant values, select the formula from the notes, substitute carefully and simplify step by step. Always check the final unit or percentage.

\[\boxed{Use\ the\ appropriate\ Trigonometry\ formula}\]

Answer: Final value obtained after the stated steps.

Question 4. SSC GD Trigonometry Practice

Solution: Identify the relevant values, select the formula from the notes, substitute carefully and simplify step by step. Always check the final unit or percentage.

\[\boxed{Use\ the\ appropriate\ Trigonometry\ formula}\]

Answer: Final value obtained after the stated steps.

Question 5. SSC GD Trigonometry Practice

Solution: Identify the relevant values, select the formula from the notes, substitute carefully and simplify step by step. Always check the final unit or percentage.

\[\boxed{Use\ the\ appropriate\ Trigonometry\ formula}\]

Answer: Final value obtained after the stated steps.

Question 6. SSC GD Trigonometry Practice

Solution: Identify the relevant values, select the formula from the notes, substitute carefully and simplify step by step. Always check the final unit or percentage.

\[\boxed{Use\ the\ appropriate\ Trigonometry\ formula}\]

Answer: Final value obtained after the stated steps.

Question 7. SSC GD Trigonometry Practice

Solution: Identify the relevant values, select the formula from the notes, substitute carefully and simplify step by step. Always check the final unit or percentage.

\[\boxed{Use\ the\ appropriate\ Trigonometry\ formula}\]

Answer: Final value obtained after the stated steps.

Question 8. SSC GD Trigonometry Practice

Solution: Identify the relevant values, select the formula from the notes, substitute carefully and simplify step by step. Always check the final unit or percentage.

\[\boxed{Use\ the\ appropriate\ Trigonometry\ formula}\]

Answer: Final value obtained after the stated steps.

Question 9. SSC GD Trigonometry Practice

Solution: Identify the relevant values, select the formula from the notes, substitute carefully and simplify step by step. Always check the final unit or percentage.

\[\boxed{Use\ the\ appropriate\ Trigonometry\ formula}\]

Answer: Final value obtained after the stated steps.

Question 10. SSC GD Trigonometry Practice

Solution: Identify the relevant values, select the formula from the notes, substitute carefully and simplify step by step. Always check the final unit or percentage.

\[\boxed{Use\ the\ appropriate\ Trigonometry\ formula}\]

Answer: Final value obtained after the stated steps.

11. Final Revision

Must-Remember

• Read the question before choosing a formula.
• Keep units consistent.
• Show important steps.
• Use approximation only when allowed.
• Box the final answer.

✍️ For More Notes Visit UniversityScope.com ✍️

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SSC GD Maths • Trigonometry

Handwritten-style, mobile-friendly exam notes.

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