If the cosine of an angle is θ √1/2
, what is θ
? You may assume that 0°≤θ≤180°
.
From the given information, we know that the cosine of θ is equal to √1/2.
We can use the inverse cosine function (also known as arccosine) to find the angle θ.
Using a calculator or reference table, we find that arccos(√1/2) is equal to 45°.
Therefore, θ = 45°.