If the cosine of an angle θ is 1√2 , what is θ ? You may assume that 0°≤θ≤180° . (1 point)
To find θ, we can use the inverse cosine function (also known as arccosine) to find the angle whose cosine is 1/√2.
cos⁻¹(1/√2) ≈ 45°
Therefore, θ is approximately 45°.