Write the expressions the cosire of an angle, knowing that the expression is the right side of the formula fon
cos (a - b) with particular values for a and B.
1) cos (175°) cos (55") + sin (175°) sin (559)
A) COS (210°)
B) cos (220°)
C) cos (190)
D) cos (120°)

step-by-step explanation:

answer: the 4 kilogram bag

step-by-step explanation: this is because if you divide the number of kilograms into the total it will tell you how much each individual kilogram would be worth. 2 kilos is 7 and change 3 would be around 6 ish and the 4 kilo would be 4.6 and change and the 5 kilos would be like 4.88

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus