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makortaanastasia
@makortaanastasia
March 2023
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Обчисліть:
1) tg²60° + sin²60°=
2) 2cos²30°-tg45°=
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cvb115
Ответ:
1) tg²60° + sin²60°=(√3)²+(√3/2)²=3+3/4=15/4
2) 2cos²30°-tg45°=2*(√3/2)²-1=2*3/4-1=3/2-1=1/2
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Answers & Comments
Ответ:
1) tg²60° + sin²60°=(√3)²+(√3/2)²=3+3/4=15/4
2) 2cos²30°-tg45°=2*(√3/2)²-1=2*3/4-1=3/2-1=1/2