0≤sin(A+π/4)<1.求A取值范围

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0≤sin(A+π/4)<1.求A取值范围0≤sin(A+π/4)<1.求A取值范围0≤sin(A+π/4)<1.求A取值范围0≤sin(A+π/4)<10【主值-π/42kπ-π/4

0≤sin(A+π/4)<1.求A取值范围
0≤sin(A+π/4)<1.求A取值范围

0≤sin(A+π/4)<1.求A取值范围

0≤sin(A+π/4)<1
0<=A+π/4<=π,A+π/4≠π/2
【主值
-π/4<=A<=3π/4,A≠π/4
2kπ-π/4<=A<=2kπ+3π/4,A≠2kπ+π/4