Step-by-step explanation:
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Step-by-step explanation:
The cosine function, along with sine and tangent, is one of the three most common trigonometric functions. In any right triangle, the cosine of an angle is the length of the adjacent side (A) divided by the length of the hypotenuse (H). In a formula, it is written simply as 'cos'.
In any right angled triangle, for any angle:
The sine of the angle = the length of the opposite side
                                   the length of the hypotenuse
The cosine of the angle = the length of the adjacent side
                                      the length of the hypotenuse
The tangent of the angle = the length of the opposite side
                                      the length of the adjacent side
So in shorthand notation:
sin = o/h   cos = a/h   tan = o/a
Often remembered by: soh cah toa
 
        
             
        
        
        
Answer:
An irrational number between -2 and -1 would be 
A rational number between -2 and -1 would be -1.5
Step-by-step explanation:
 = -1.570796... This number does not have repeating decimals, patterns, and it isn't a terminating decimal. It is irrational.
 = -1.570796... This number does not have repeating decimals, patterns, and it isn't a terminating decimal. It is irrational.
-1.5 is a terminating decimal, therefore it is rational, as well as between -2 and -1.
 
        
             
        
        
        
Answer:
x=33
Step-by-step explanation:
because DC and AB are the same, x must be 33.
 
        
             
        
        
        
The quadratic formula is...

your a will be in front of your x^2, b in front of your x, and c will be the number without an x. Plug those into the equation and you'll get two answers. That will be it