Stephen H. answered 05/24/21
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2cosx=-sqrt2 ... rearrange to be cosx = -sqrt(2)/2= 3pi/4 and 5pi/4
Mayleen M.
asked 05/24/21Find all solutions to 2cos(θ)=−√2 on the interval 0≤θ<2π
θ =
Give your answers as exact values, as a list separated by commas.
Stephen H. answered 05/24/21
Tutor of Math, Physics and Engineering ... available online
2cosx=-sqrt2 ... rearrange to be cosx = -sqrt(2)/2= 3pi/4 and 5pi/4
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