Same chapter3 marksDifficulty: Medium
If sin θ = cos θ and θ is acute, find θ.
Trigonometrical Ratios of Standard Angles
3 marksDifficulty: Medium
Evaluate sin 60° cos 30° + cos 60° sin 30°.
Original Khojo Papers practice question — not from a past board paper.
Answer
1
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
It is (√3/2)(√3/2) + (1/2)(1/2) = 3/4 + 1/4 = 1, which is sin 90°.
Related questions
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Same chapter3 marksDifficulty: Medium
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If 2 cos θ = 1 and θ is acute, find θ and the value of sin θ.
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Evaluate 2 tan245° + cos230° − sin260°.
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Evaluate: 2 sin 30° + 3 cos 60° − tan 45°.
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Same chapter2 marksDifficulty: Easy
Write the values of sin 30°, cos 60° and tan 45°.
Trigonometrical Ratios of Standard Angles