In a right triangle, sin(45°) = ?

A 1

B 1/2

C √2/2

D √3/2

✓ Correct Answer: Option C

In a 45-45-90 triangle, sin(45°) = opposite/hypotenuse = 1/√2 = √2/2 ≈ 0.707.

💡 Why is C) the correct answer?

The correct answer to the question "In a right triangle, sin(45°) = ?" is Option C: √2/2.

The other options — A) 1, B) 1/2, D) √3/2 — are incorrect for this SAT Exam Prep question. As explained above: In a 45-45-90 triangle, sin(45°) = opposite/hypotenuse = 1/√2 = √2/2 ≈ 0.707.

📚 About This SAT Exam Prep Practice Question

This 2-level SAT Exam Prep question from the Math (Calculator) topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free SAT Exam Prep practice test or use flashcards for spaced repetition review.

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In a right triangle, sin(45°) = ?

✓ Correct Answer: Option C

📚 About This SAT Exam Prep Practice Question

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