Question

Which is the cosine ratio of ZA?А19728195B195197281972819519528

Answer 1

Let's begin by listing out the given information:

`\begin{gathered} adjacent,AC=28 \\ hypotenuse,AB=197 \\ opposite,BC=195 \\ cosA=(adjacent)/(hypotenuse) \\ cosA=(28)/(197)=0.14213 \\ A=\cos ^(-1)0.14213 \\ A=81.82\approx82 \\ A=82^(\circ) \\ \\ \therefore cosA=(28)/(197) \end{gathered}`