The value of cos 45 in a right angle triangle is 1/√2.
<h3 /><h3>What is the trigonometry ratio?</h3>
The trigonometry ratios are ratios that can be used to determine the side and angles of a triangle depending on the known parameter. The basic trigonometry ratios are denoted by the acronym: SOH CAH TOA
i.e.
Sin θ = opp/hyp
Cos θ = adj/hyp
Tan θ = opp/adj
From the given diagram, we are to find the Cos 45°
i.e.
θ = 45°
Let's recall the angle 45 45 90 theorem that states that right angles have the following values for the sides:
