Answer:
i think the hypotenuse 86 hope this help mark brainliest
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Step-by-step explanation:
<u>Use cosine:</u>
- cos = adjacent / hypotenuse
- cos ∠L = KL/JL
- cos 21° = 4/x
- x = 4 / cos 21°
- x = 4.3 (rounded)
 
        
                    
             
        
        
        
Answer:
the answer would be -2, -6 and if you need more help i believe you can  work up to it
Step-by-step explanation:
 
        
             
        
        
        
Answer:
sinx
Step-by-step explanation:
hello :
note :
for all x in ℝ :   1) sin(x+2π) = sinx        2)  sin(π-x) = sinx
in this exercice :
3π - x = 2π+(π - x)
sin(3π - x) = sin(2π +(π - x)) =sin(π-x) = sinx