This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.

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Step 1: Determine and . Given and . This means is in the third quadrant, where both and are negative. We can form a right-angled triangle where the opposite side is 1 and the adjacent side is 2. The hypotenuse . Therefore, in the third quadrant:
Step 2: Calculate . Using the double angle formula :
Step 3: Substitute the values into the expression. The expression to evaluate is . Substitute the values of and :
Step 4: Simplify the complex fraction. To combine the terms in the numerator and denominator, we rationalize the terms: Substitute these back:
Step 5: Rationalize the denominator. Factor out common terms and then multiply the numerator and denominator by the conjugate of the denominator, which is : Numerator: Denominator:
Step 6: Write the final expression in surd form. = \frac{7\sqrt{5 - 11}{8}}
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Alright jaay — let's do this. Step 1: Determine x and x.
This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.