Step-by-step explanation:
the answer to this question is 410.29
sorry if this is wrong
 
        
             
        
        
        
Answer:
slope=2 and y intercept =1
Step-by-step explanation:
y=2x+1
y+2(0)+1
y=0+1
y=1
 
        
                    
             
        
        
        
Answer:
θ =  (60° )
 (60° )
Step-by-step explanation:
Using the identity
sin²x + cos²x = 1 ⇒ sin²x = 1 - cos²x 
Given
cos²θ - sin²θ = 2 - 5cosθ
cos²θ - (1 - cos²θ) = 2 - 5cosθ
cos²θ - 1 + cos²θ = 2 - 5cosθ
2cos²θ - 1 = 2 - 5cosθ ( subtract 2 - 5cosθ from both sides )
2cos²θ + 5cosθ - 3 = 0 ← in standard form
(cosθ + 3)(2cosθ - 1) = 0 ← in factored form
Equate each factor to zero and solve for θ
cosθ + 3 = 0
cosθ = - 3 ← not possible as - 1 ≤ cosθ  ≤ 1
2cosθ - 1 = 0
cosθ =  , so
 , so
θ =  (
 ( ) =
 ) =  ( or 60° )
 ( or 60° )
 
        
                    
             
        
        
        
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