A coefficient is a number that is attached to a term.
For example:
3x² - 5x + 6 = 0                 
The coefficient of x² is 3.
The coefficient of x = -5. 
Hope this explains it.
        
             
        
        
        
cos A is 0.8511 and tan B is 1.6
Step-by-step explanation:
Find the 3rd length or the hypotenuse.
<u>Pythagoras theorem</u>
 =
 =  +
 + 
 =
 =  +
 + 
 = 64 + 25
 = 64 + 25
hypotenuse = 
hypotenuse = 9.4
a) Cos A
<u>Data:</u>
Adjacent = 8
Hypotenuse = 9.4
<u>Formula:</u>
Cos (Angle) = 
Cos A =  
Cos A = 0.8511
A =  (0.8511)
 (0.8511)
A = 31.7°
b) Tan B
<u>Data: </u>
Opposite = 8
Adjacent = 5
<u>Formula:</u>
Tan (Angle) = 
Tan B = 
Tan B = 1.6
B =   (1.6)
 (1.6)
B = 58°
Therefore, cos A is 0.8511 and tan B is 1.6.
Keyword: cos, tan
Learn more about cos at
#LearnwithBrainly
 
        
             
        
        
        
Answer:
x= -8
Step-by-step explanation:
x/2 is greater than of equal to -4
hence 
x/2=-4
x=-4*2= -8