What is the value of the square of secant x minus 1 from the given equation?

First, we solve for the determinant of 2 x 2 matrix given in the left hand seid of the equation. Back substitute the result into the equation and simplify. Divide the equation by 4 and take the square root of the equation, Then, find the sine inverse of the equation. The value of angle x obtained is subsituttes into the trigononetric expression to find the required value of the trigonometric expression.
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