Answer:
JK = 7.1 ft
Step-by-step explanation:
For angle K, JL is the opposite leg. JK is the hypotenuse. The trig ratio that relkates the opposite leg to the hypotenuse is the sine.
[tex] \sin A = \dfrac{opp}{hyp} [/tex]
[tex] \sin K = \dfrac{JL}{JK} [/tex]
[tex] \sin 77^\circ = \dfrac{6.9}{JK} [/tex]
[tex] (JK)\sin 77^\circ = 6.9 [/tex]
[tex] JK = \dfrac{6.9}{\sin 77^\circ} [/tex]
[tex] JK = 7.1 [/tex]
