Answer:
There are 180 degrees in a triangle so it is 80 degrees
 
        
                    
             
        
        
        
Answer:
D
Step-by-step explanation:
Using the Cosine rule to find AC
AC² = BC² + AB² - (2 × BC × AB × cosB )
       = 18² + 12² - ( 2 × 18 × 12 × cos75° )
       = 324 + 144 - 432cos75°
       = 468 - 111.8
       = 356.2 ( take the square root of both sides )
AC =  ≈ 18.9
 ≈ 18.9
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Using the Sine rule to find ∠ A
 =
 =  ( cross- multiply )
 ( cross- multiply )
18.9 sinA = 18 sin75° ( divide both sides by 18.9 )
sinA =  , then
 , then
∠ A =  (
 (  ) ≈ 66.9°
 ) ≈ 66.9°
 
        
             
        
        
        
Answer:
0.3
Step-by-step explanation:
A. .375
B. .75
C. .3
D. .5
 
        
                    
             
        
        
        
Answer:
24 ÷ 0.012 =2000
Step-by-step explanation:
24 ÷ 0.012 
= 2000
 
        
             
        
        
        
Answer:
-1.5
Step-by-step explanation:
You just have to count on the graph