For this case we can use the following trigonometric relationship to solve the problem:

Where,
C.O: opposite leg
h: hypotenuse
Substituting values we have:

Clearing x we have:

Making the corresponding calculations we have:
Answer:
The value of x is given by:
Answer:
a=1, b=1
Step-by-step explanation:
Given the equation: 
If the solution of the equation 
Then to find the values of a and b, we substitute
into the equation.

A :
The line should be placed in between 0 & 1 : 4
B : []
C : 32 x .50 = $ 16 [ Cost ]
Answer:
He spent 144.42 and he got back 55.58
Step-by-step explanation:
Two time twenty-eight equals 56.