Simplify
cos 38° cos 52° – sin 38° sin 52°
⇒ cos 38° cos 52° – sin 38° sin 52°
⇒ cos 38° sin (90–52)° – sin 38° cos (90–52)°
⇒ cos 38° sin 38° – sin 38° cos 38°
⇒ 0
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Generated by AI. May contain inaccuracies — always verify with your textbook.
