Answer:
The real and imaginary parts of the result are
and
, respectively.
Step-by-step explanation:
Let be
, the following expression is expanded by algebraic means:



If
, then:



Then, the variable is substituted in the equation and simplified:






The real and imaginary parts of the result are
and
, respectively.
Answer:
The value of x = 35.62
Therefore, option C) is true.
Step-by-step explanation:
Given
Ф = 58°
hypotenuse = 42
To determine:
x = ?
We know that the trigonometric ratio
sin Ф = opposite / hypotenuse
Here:
so substituting the value
sin Ф = opposite / hypotenuse
sin 58° = x / 42
x = 42 × sin 58°
= 35.62
Thus, the value of x = 35.62
Therefore, option C) is true.
Answer:

Step-by-step explanation:
As per the given problem, Steve starts with $250, and spent $20 a week, the problem mentions nothing about Steve's savings, therefore, one can assume that they didn't save anything. As the problem requests, parameter (
) will be used for the time, and (
) for the savings.
Steve's saving would be equal to his initial value, minus his expense, in essence;

The initial value, minus the amount spend per week multiplied by the week number will equal the savings left.