admin百科知識 2022-02-13 3:54:48 已知a∈(π2,π) sinα=12求a已知a∈(π/2,π) sinα=1/2求a網友廻答：匿名網友已知a∈(π/2,π) sinα=1/2α=π-π/6=5π/6網友廻答：匿名網友已知a∈(π/2,π) sinα=1/2a=5π/6；很高興爲您解答,skyhunter002爲您答疑解惑如果本題有什麽不明白可[kě]以追問, db標簽 生活常識_百科知識_各類知識大全»已知a∈(π2,π) sinα=12求a
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