Question: I need help on this question Find the exact value of the expression. cos 5 cos 25 - sin 5 sin 25 cos 5 cos

I need help on this question

Find the exact value of the expression. cos 5 cos 25 - sin 5 sin 25 cos 5 cos 25 - sin 5 sin 25* = (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)

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