Right+Triangle+Trigonometry

Trigonometry Trigonometric Functions in a Right Triangle The hypotenuse of a right triangle is always the longest side, directly across from the right angle. The opposite and adjacent legs are shown in the diagram below.



A useful way of remembering this is the mnemonic device: SOH - CAH - TOA



Example: A right triangle has sides whose lengths are 8 in., 15 in. and 17 in. Find the values of the six trig functions of the acute angle, θ, shown in the diagram.