Pythagoras' Theorem & Trigonometry (Grade 8)
Free printable Grade 8 geometry worksheet: Pythagoras' theorem and the sine, cosine and tangent ratios.
✓ Answer key checked by math, never wrong
Grade 8 · Math worksheet
Name
Date
Math
Geometry: Pythagoras' Theorem & Trigonometry
Use Pythagoras' theorem to find the missing side (exact answer), or find the trigonometric ratio rounded to 3 decimal places.
- 1.A right triangle has hypotenuse 13 and one leg 5. Find the other leg.
- 2.A right triangle has hypotenuse 26 and one leg 10. Find the other leg.
- 3.A right triangle has legs 12 and 16. Find the hypotenuse.
- 4.A right triangle has legs 9 and 12. Find the hypotenuse.
- 5.A right triangle has legs 10 and 24. Find the hypotenuse.
- 6.A right triangle has sides 12 and 16 and hypotenuse 20. The angle theta is opposite the side of length 12. Find cos(theta) as a decimal, rounded to 3 decimal places.
- 7.A right triangle has sides 10 and 24 and hypotenuse 26. The angle theta is opposite the side of length 10. Find cos(theta) as a decimal, rounded to 3 decimal places.
- 8.A right triangle has sides 12 and 16 and hypotenuse 20. The angle theta is opposite the side of length 12. Find tan(theta) as a decimal, rounded to 3 decimal places.
- 9.A right triangle has sides 20 and 21 and hypotenuse 29. The angle theta is opposite the side of length 20. Find tan(theta) as a decimal, rounded to 3 decimal places.
- 10.A right triangle has sides 9 and 40 and hypotenuse 41. The angle theta is opposite the side of length 9. Find tan(theta) as a decimal, rounded to 3 decimal places.
Made with ChalkBee · chalkbee.com