Discuss Forum

1. 45°

  • A. 1
  • B. 1
  • C. 1
  • D. 1

Answer: Option B

Explanation:

যদি A = 45' হয়,

তবে cos2A = cos (2*45) = cos90' = 0 (Ans:)

Post your comments here:

Name:
Mobile:
Email:(Optional)

» Your comments will be displayed only after manual approval.