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hodyreva [135]
3 years ago
8

Find all solutions to 5cosθ = 3cosθ - 1.

Mathematics
1 answer:
IrinaVladis [17]3 years ago
6 0
Hello : 
<span>5cosθ = 3cosθ - 1.   
</span><span>5cosθ - 3cosθ = 1.
2cos</span>θ =1
cosθ =1/2
all solutions : 
 cosθ =cos<span>π<span>/3
</span></span>all solutions :
θ =π/3 +2kπ     or θ = - π/3 +2kπ ....k in Z

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