Asked by Quinn

Solve for θ in the equation cos θ = -0.334 when 0º < θ < 180º. Round your answer to the nearest tenth of a degree.
Answered by Damon
between 90 and 180 where x is - and y is +
cos^-1 (.334) = 70.5
so 180 - 70.5 = 109.5
Answered by Quinn
Thank you very much! I didn't know the formula.
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