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Bond [772]
3 years ago
5

Cos87°cos33° - sin87°sin33°

Mathematics
1 answer:
alina1380 [7]3 years ago
6 0

Answer:

-\frac{1}{2}

Step-by-step explanation:

cos(87° + 33°) = cos(120°) = -\frac{1}{2}

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