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10 votes
10 votes
What is cos 10° cos 8° − sin 10° sin 8° equal to?

User Anoroah
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1 Answer

9 votes
9 votes

Answer:

Explanation:

cos 10° cos 8° − sin 10° sin 8° = cos(10° + 8°) = cos(18°)

User Tuxer
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