สงสัยเกี่ยวกับค่า sin cos tan ของ 30 45 60
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cos 60 It is equal to sin60 = √32
tg 45° + cos 30° ctg 60° b) sin 60° cos 60° + sin 30° cos 30° - sin 45° cos 45° Ajutor !! 1 Vezi răspunsul Insigna care arată cizma unui cost of goods sold cos 60 views · 4 years agomore Mate316 439K Subscribe 52 Share Save
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