Wskaż wartość wyrażenia sin do kwadratu 45 stopni + cos. 30 stopni / 2 sin. 60 stopni:
... = (√2/2)² + (√3/2) / (2 * √3/2) = 2/4 + (√3/2) / (√3) = 1/2 + √3/2 * 1/√3 = 1/2 + 1/2 = 1
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... = (√2/2)² + (√3/2) / (2 * √3/2) = 2/4 + (√3/2) / (√3) = 1/2 + √3/2 * 1/√3 = 1/2 + 1/2 = 1