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Sam'Tj

Penyelesaian persamaan triginometri

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\(phi\)\(pi\)arc cos (0.5) = 2x - 45*

60* U 300* = 2x - 45*

 

Sehingga, 60* = 2x - 45 --> x = 52,5* atau 300* = 2x - 45* --> x = 172.5*

 

Jadi, HP = { x | x = 52,5* U x = 172,5* , 0* <= x =< 360* ,x E R+ }

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