Question

Right Triangle QuizSolve for x. Round your answer to the nearest tenth.25A21X=Calculator

Answer 1

In this case we need the cos function:

$\cos x=\frac{21}{25}=0.84$

Now we use the inverse function of cos:

$\begin{gathered} x=\cos ^{-1}0.84 \\ x=32.86 \end{gathered}$

So the angle x is 32.9 degrees