Math, asked by jitendragupta2803, 4 months ago

Sinsqure 22 + cos²a=

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Answered by sajshet

1

Answer:

cos²22.5 - sin²22.5, cos(2×22.5), cos45°=1/√2, since cos²A-sin²A=cos2A. eddibear3a and 9 more users found this answer helpful.

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