SOF International Mathematics Olympiad (IMO)
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Set A
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2026
.
Sample
What is the value of tan 30°?
Explanation
Explanation
This is a standard trigonometric ratio from the trigonometric values table for 0°, 30°, 45°, 60°, 90°. tan 30° = 1/√3, a value worth memorising directly.
PRO TIP
Re-check your working by substituting the answer back into the original question.
Related Questions
Find the LCM of 12 and 7 given that their HCF is 1.