Question

If two sides of a triangle are \( \sqrt{3} - 1 \) and \( \sqrt{3} + 1 \) units and their included angle is \( 60^\circ \), then the third side of the triangle is

• A. 15 units
• B. \( \sqrt{15} - 2 \) units
• C. \( \sqrt{15} + 2 \) units
• D. \( \sqrt{6} \) units

Hint:

Cosine rule is perfect for finding the third side when two sides and the included angle are known (SAS).

Answer 1

The Correct Option is D