Answer:
The inverse is ±sqrt(100-x)
Step-by-step explanation:
y= 100 - x^2
Exchange x and y
x = 100 -y^2
Solve for y
Subtract 100 from each side
x-100 = 100-100-y^2
x-100 = - y^2
Multiply by -1
-x+100 = y^2
100 -x = y^2
Take the square root of each side
±sqrt(100-x) = sqrt(y^2)
±sqrt(100-x) = y
The inverse is ±sqrt(100-x)
The explanation is:
The definition of "secant of (x)" is: 1 / (sine of x) .
The numerator stays in the house and the denominator shows the power
The last two choices.
Supplementary and linear
ANSWER
A. 8cm
EXPLANATION
The diagonal of the square is

Let the length of each side of the square be l units.
Then the diagonal and any two sides form an isosceles right triangle with the diagonal being the hypotenuse.
We use the Pythagoras Theorem, to obtain,

This implies that,


Solve for l,

Take positive square root of both sides

