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alukav5142 [94]
3 years ago
8

Please help with this question

Mathematics
1 answer:
uysha [10]3 years ago
5 0

Answer:

C

Step-by-step explanation:

The difference formula for cosine is

cos(x - y) = cosxcosy + sinxsiny

Consider

cos75 = cos(120 - 45)°, then

cos(120 - 45)°

= cos120°cos45° + sin120°sin45° → C

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