Ace That College Math CLEP Test 2024 – Crunch Numbers and Conquer!

Sin 90° is equal to the ratio of the side opposite the angle (1) to the hypotenuse (1) in a right triangle. This results in a value of 1, making D the correct answer. A is incorrect because the value of sin 90° cannot be negative. B is incorrect because the value of sin 90° cannot be 0.