[tex]{ \gray{ \boxed{ \boxed{ \mathfrak{ \underline{ \red{pembahasan}}}}}}}[/tex]
y = 5 cos (x + 60˚) + 16 , 0˚ ≤ x ≤ 2π
Nilai minimum yang didapatkan:
cos (x + 60˚) = -1
cos (x + 60˚) = cos 180˚
x + 60˚ = 180˚
x = 180˚ - 60˚ = 120˚.
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[tex]{ \gray{ \boxed{ \boxed{ \mathfrak{ \underline{ \red{pembahasan}}}}}}}[/tex]
y = 5 cos (x + 60˚) + 16 , 0˚ ≤ x ≤ 2π
Nilai minimum yang didapatkan:
cos (x + 60˚) = -1
cos (x + 60˚) = cos 180˚
x + 60˚ = 180˚
x = 180˚ - 60˚ = 120˚.
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