Answer:
and 
Step-by-step explanation:
We are given that sin x+cos x=cos 2x
We have to solve the given equation for 

Because 








Tan x is positive in I and III quadrant
In III quadrant angle
replace by 
Therefore, 

Answer: 5
Explication: Do PEMDAS first solve the parenthesis which is 6x19= 114 then add the 25 which equals 139. Now slice the exponent 6^2=36 then multiply by 4 which equals 144. Subtract 144-139 and you get 5
Since the sides are equivalent , both of the sides are 44. The formula for hypotenuse is x root 2 making the hypotenuse 44 root 2
A,C,and D are all correct
Answer: The correct answer is C,
5 1/2 feet
Step-by-step explanation:
Alexis' scale drawing represents the longest side of the storage bin as 2 3/4 inches. Converting to improper fraction, it becomes 11/4 inches. This is also 2.75 inches.
The scale used is 1/2 inch = 1 feet. This means that a length of 1 feet of the longest side of the actual storage bin is 1/2 inch on the drawing.
Let the actual length, in feet of the longest side of the storage bin be x feet. Therefore
If 0.5 inch = 1 feet
2.75 inch = x
0.5x = 2.75 × 1
x = 2.75/0.5 = 5.5 feet