Find all angles θ between 0° and 180° satisfying the given equation. (Enter your answers as a comma-separated list. Round your answers to one decimal place.)

Question

cos θ = 1/7

Answer 1

cosine is positive in QI and QIV
Find θ such that cos θ = 1/7

It is the only angle between 0° and 180° whichc has such a positive cosine value.

Answer 2

8.2,171.8 degrees