Same chapter3 marksDifficulty: Medium
If 2 cos θ = 1 and θ is acute, find θ and the value of sin θ.
Trigonometrical Ratios of Standard Angles
3 marksDifficulty: Medium
Evaluate: 2 sin 30° + 3 cos 60° − tan 45°.
Original Khojo Papers practice question — not from a past board paper.
Answer
1.5
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Substituting the standard values gives 2(1/2) + 3(1/2) − 1 = 1 + 1.5 − 1 = 1.5.
Related questions
From the same topic and chapter, at a similar level.
Same chapter3 marksDifficulty: Medium
Evaluate (sin 30° + cos 60°) ÷ (tan 45° + cot 45°).
Trigonometrical Ratios of Standard Angles
Same chapter3 marksDifficulty: Medium
Evaluate 2 tan245° + cos230° − sin260°.
Trigonometrical Ratios of Standard Angles
Same chapter3 marksDifficulty: Medium
Evaluate sin 60° cos 30° + cos 60° sin 30°.
Trigonometrical Ratios of Standard Angles
Same chapter3 marksDifficulty: Medium
If sin θ = cos θ and θ is acute, find θ.
Trigonometrical Ratios of Standard Angles
Same chapter2 marksDifficulty: Easy
Write the values of sin 30°, cos 60° and tan 45°.
Trigonometrical Ratios of Standard Angles