Geometry and TrigonometryEasy–MediumSine from two legs
Geometry and Trigonometry practice question
A right triangle has legs of length 8 and 15. What is the sine of the angle opposite the leg of length 8?
Answer: 8/17
The hypotenuse is √(64 + 225) = 17. sin = opposite/hypotenuse = 8/17.
Common wrong answers
- If you answered 15/17
- 15/17 is the COSINE of that angle (or the sine of the other acute angle).
- If you answered 8/15
- 8/15 is the tangent (opposite over adjacent).
- If you answered 17/8
- 17/8 is hypotenuse over opposite, the sine upside down.
More Geometry and Trigonometry questions
- Easy–Medium
A circle has a radius of 6. What is its area? (Use A = πr².) - Easy–Medium
A right triangle has legs of length 6 and 8. What is the length of the hypotenuse? - Easy–Medium
A circle has a radius of 5. What is its circumference? (Use C = 2πr.) - Easy–Medium
What is the midpoint of the segment joining the points (2, 3) and (8, 11)? - Easy–Medium
What is the measure, in degrees, of angle B? - Easy–Medium
What is the area, in square centimeters, of the trapezoid?
Not affiliated with the College Board. SAT is a trademark of the College Board.