Answer:
x is all real numbers.
Step-by-step explanation:
Since there is only 1 value of y, it is a straight line. Since domain measures the range of x values, it can be any real number as the line goes from negative infinity to infinity.
What are the answer choices??
we are given
The angle is at right angled
It means that it's angle will be 90 degree
Since, these angles are part of right angle
so, their sum must be 90 degree
so, we get

now, we can solve for a


divide both sides by 7
and we get
.............Answer
13 - (x+2) = 8
subtract 13 from both sides
-(x+2) = -5
divide by -1 to get rid of negative
(x+2) = 5
subtract 2 from both sides
x=3
Answer:

Step-by-step explanation:
we would like to solve the following equation:

notice that, the fraction can be reduced therefore reduce fraction:


by trigonometric value table we obtain:

get rid of sin:

and we are done!