Q. If Sin4A - Cos4A = 1 then (A/2) in degrees is 0° < A ≤ 90°
A) 45
B) 60
C) 30
D) 40
✔ Correct Answer: 45
Exam Insight
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A) 45
B) 60
C) 30
D) 40
✔ Correct Answer: 45
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