Q. The value of cos²45° − sin²45° is:

  • (A) 1
  • (B) 0
  • (C) 1/2
  • (D) -1
✅ Correct Answer: (B) 0
Explanation: Both cos²45° and sin²45° equal 1/2.

Published by Roshan ⭐ 3.43K Points at 05-Jul-2026 01:40 pm in Math

Explanation by: Roshan
Both cos²45° and sin²45° equal 1/2.

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