Note that we are given the opposite side of the unknown angle and the hypotenuse. Therefore, to find its measure, we will use the sine ratio.
sin J = Opposite/Hypotenuse ⇔ 9/14
The sine of the angle is 914. Now, to isolate m∠ J, we will use the inverse function of sin.
sin J=9/14 ⇔ J=sin ^(- 1)9/14
Let's use a calculator to find the value of sin ^(- 1) 914. First, we will set our calculator into degree mode. To do so, push MODE, select Degree instead of Radian in the third row, and push ENTER. Next, we push 2ND followed by SIN, introduce the value 914, and press ENTER.
