Question

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Determinati toate valorile nr real x∈[0,pi] , pentru care sin (4x + pi/3)=1.

Answer 1

4x+π/3=π/2 +2kπ
4x=π/2-π/3+2kπ
4x=π/6+2kπ
x=π/24+kπ/2
x=π/24;π/24+π/2 ptx ca x≤π
x∈{π/24;13π/24}