cos 2x= (sqrt(3))/(2) Solve the equation on the interval [0,2pi ]

moiraudjpdn

moiraudjpdn

Answered question

2022-08-05

cos 2 x = 3 2
Solve the equation on the interval [ 0 , 2 π ]

Answer & Explanation

vibrerentb

vibrerentb

Beginner2022-08-06Added 21 answers

cos 2 x = 3 2
2 x = cos 1 ( 3 2 ) Since cosine is positive in the first and fourth quadrants, 2x can either be
2x=30 or
2x=330
x=15 or
x=165

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