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Mathematics
Savion Fry
16 July, 08:27
Find all solutions to 5cosθ = 3cosθ - 1.
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Kellen Hammond
16 July, 09:02
0
Hello:
5cosθ = 3cosθ - 1.
5cosθ - 3cosθ = 1.
2cos θ = 1
cosθ = 1/2
all solutions:
cosθ = cos π / 3
all solutions:
θ = π/3 + 2kπ or θ = - π/3 + 2kπ ... k in Z
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