Question

Find JK.Write your answer as an integer or as a decimal rounded to the nearest tenth. JK = ___

Answer 1

Given:

`\begin{gathered} \text{Side(IJ)}=6 \\ \angle K=90^(\circ) \\ \angle J=42^(\circ) \end{gathered}`

As, it is right angled triangle.

`\begin{gathered} \text{Side JK=side IJ}\cdot\cos (42^(\circ)) \\ =6\cdot(0.7431) \\ =4.4586 \end{gathered}`

So, the side JK=4.5 ( nearest to tenth)