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Wyrażenie \( (cos30^0-cos45^0)(cos30^0+cos45^0) \) przyjmuje wartość:

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Wyrażenie \( (cos30^0-cos45^0)(cos30^0+cos45^0) \) przyjmuje wartość:

a. 0,5

b. 1

c. 0,25

d. \( - \frac{1}{4} \)

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