alleryIn a right triangle with BC equal to AB equal to a, the hypotenuse AC equals:
Aa root 3
Ba root 5
Ca root 7
Da root 2
Answer & Solution
Correct answer: D. a root 2
1. Apply Pythagoras: AC squared equals a squared plus a squared.
2. That is 2 a squared.
3. So AC equals a root 2.
_Source: syllabus Mathematics, Chapter 8, Introduction to Trigonometry._
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