Answer:
cos B = 
tan B = 
sin B = 
Step-by-step explanation:
In the right triangle, there are three sides and 2 acute angles
- Hypotenuse ⇒ the opposite side of the right angle
- Leg1 and Leg 2 ⇒ the sides of the right angle
The trigonometry functions of one of the acute angles Ф are
- sin Ф = opposite leg/hypotenuse
- cos Ф = adjacent leg/hypotenuse
- tan Ф = opposite leg/adjacent leg
In Δ ACB
∵ ∠C is the right angle
∴ AB is the hypotenuse
∵ AC is the opposite side of ∠B ⇒ leg1
∵ CB is the adjacent side of ∠B ⇒ leg2
→ By using the ratios above
∴ cos B =  , tan B =
 , tan B =  , sin B =
 , sin B = 
∵ CB = 7, AB = 25, AC = 24
∴ cos B = 
∴ tan B = 
∴ sin B = 
 
        
             
        
        
        
The first term (a) is - 18
You add 5 to get to the next term. Or you can solve it by taking any 2 consecutive terms and find their difference.
Formula
d = t4- t3
Givens
t4 = - 3
t3 = - 8
Solution 1
d = t4 - t3             Substitute
d = -3 -  ( - 8)        Remove the brackets 
d = -3 + 8             Combine  
d = 5                    Difference 
Remark 
Find the general formula
tn = - a + (n - 1)d      Substitute
So term 20 =           Example    
t20 = -18 + (20 - 1)*5 Combine the inside of the brackets. Remove the brackets 
t20 = - 18 + 19*5          Combine 19 and 5           
t20 = -18 + 95              "Subtract"
t20 = 77                        Answer
 
        
             
        
        
        
C. 0.0031 
6.2 divided by 2,000 = 0.0031
        
             
        
        
        
Answer:
i. 15, 18, 20, 20, 25
ii. 
a) 19.6
b) 20
c) 20
d) 10
Step-by-step explanation:
 
        
             
        
        
        
Answer:
f(-14) = -6
f(-4) = 6
f(12) = 6
f(0) = -3
negative
Step-by-step explanation:
f(-14) = -6
This is because when x is -14, y is -6, as seen in the graph
f(-4) = 6
This is because when x is -4, y is 6, as seen in the graph
f(12) = 6
This is because when x is 12, y is 6, as seen in the graph
f(0) = -3
This is because when x is 0, y is -3, as seen in the graph
is f(4) positive or negative?
negative
This is because when x is 4, y is -6, as seen in the graph