Cos²(20) - 1/4 = ?
cos(10)xcos(50)
Could you please help me how to get to the answer?...
Mathematics, 15.06.2021 15:20 wellllm
Cos²(20) - 1/4 = ?
cos(10)xcos(50)
Could you please help me how to get to the answer?
Unit is degree
Answers: 2
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