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Write general solutions using periodicity
Worksheet
Grade Level
Trigonometry
TRIG.96 Write general solutions using periodicity
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Solve cos(2θ + -60°) = -√3/2 for all real θ (degrees). Choose the correct general solution. Let k be any integer.
A
θ = 105° + 180°k
B
θ = 105° + 90°k, or θ = 135° + 90°k
C
θ = 105° + 180°k, or θ = 135° + 180°k
D
θ = 210° + 360°k, or θ = 270° + 360°k
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