The value of :
cos2 60° - 2 sin3 30° + 3 cot4 45° is :
1
-2
3
2
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If cot A = tan A and 0 ≤ A ≤ 90°, the measure of angle A is :
30°
60°
45°
90°
Find the value of:
sin 30° cos 30°