Math, asked by nisharajesh5101985, 8 months ago

please give me 1) ,2) questions a promise I give back thanks and follow

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Answered by vishal200444

1

Step-by-step explanation:

26. cos 2θ cos 2Φ + sin²(θ-Φ) - sin²(θ+ Φ) = cos(2θ + 2Φ).

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