Class 9 · ICSE · Mathematics

Trigonometrical Ratios of Standard Angles

Values of trigonometric ratios of 0°, 30°, 45°, 60° and 90° and their use.

Topics in this chapter

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8 questions in this chapter.

Answer available
Class 9 · Mathematics · Trigonometrical Ratios of Standard Angles
Evaluate 2 tan²45° + cos²30° − sin²60°.
3 marksMediumNumerical
Answer available
Class 9 · Mathematics · Trigonometrical Ratios of Standard Angles
If 2 cos θ = 1 and θ is acute, find θ and the value of sin θ.
3 marksMediumNumerical
Answer available
Class 9 · Mathematics · Trigonometrical Ratios of Standard Angles
Evaluate (sin 30° + cos 60°) ÷ (tan 45° + cot 45°).
3 marksMediumNumerical
Answer available
Class 9 · Mathematics · Trigonometrical Ratios of Standard Angles
If sin θ = cos θ and θ is acute, find θ.
3 marksMediumNumerical
Answer available
Class 9 · Mathematics · Trigonometrical Ratios of Standard Angles
Evaluate sin 60° cos 30° + cos 60° sin 30°.
3 marksMediumNumerical
Answer available
Class 9 · Mathematics · Trigonometrical Ratios of Standard Angles
Write the values of sin 30°, cos 60° and tan 45°.
2 marksEasyNumerical
Answer available
Class 9 · Mathematics · Trigonometrical Ratios of Standard Angles
The value of tan 60° is:
1 markEasyMCQ
Answer available
Class 9 · Mathematics · Trigonometrical Ratios of Standard Angles
Evaluate: 2 sin 30° + 3 cos 60° − tan 45°.
3 marksMediumNumerical