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Class X Mathematics

Chapter 8: Introduction to Trigonometry

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Worksheet Details:

  • • Title: Class X Math: Introduction to Trigonometry Printable Sheet
  • • Format: Print Optimized CSS stylesheet
  • • Sections: Formulas checklist, 5 assessment questions, worked keys

NexPro Education Worksheet

Class X Mathematics: Introduction to Trigonometry

Name: ______________________Date: __________________Score: ______ / 5

Section I: Key Formulas

Pythagorean Identity
\sin^2\theta + \cos^2\theta = 1
Tangent Ratio
\tan\theta = \frac{\sin\theta}{\cos\theta}

Section II: Answer the Questions

1. Evaluate: 0 0 02 2 cos 45 sin 30 2 3 cos30+

Solve and write the step-by-step solution in the workspace below.

2. In the given figure, ABC is a triangle in which DE||BC. If AD = x, DB = x - 2, AE = x + 2 and EC = x - 1, then find the value of x.

Solve and write the step-by-step solution in the workspace below.

3. Prove that: tan cot 1 sec cos1 cot 1 tan ecθ θ θ θθ θ+ = +- -

Solve and write the step-by-step solution in the workspace below.

4. If tan (A + B) = 3 and tan (A - B) = 1 3 ; 0° < A+B ≤ 90°; A > B, find A and B.

Solve and write the step-by-step solution in the workspace below.

5. Simplify: 2 2 2 2 tan cot 1 tan 1 cot θ θ θ θ++ +

Solve and write the step-by-step solution in the workspace below.

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