# Thread: Geometry Question

1. ## Geometry Question

Questions 3 and 4: Determine whether or not the given side lengths will form a right triangle.

3. 15, 11, and 2 x square root of 26

a. right triangle
b. not a right triangle

4. square root of 41, 4, and 5

a. right triangle
b. not a right triangle

17. If tan=5/4 calculate the value of cos

a. 5/ square root of 41
b. 4/ square root of 41
c. 5/3
d. 4/3
18. If cos= 2xsquare root of 10/7 calculate the value of sin.

a. 3/7
b. square root of 29/7
c. square root of 69/7
d. square root of 89/7
19. If sin= 1/ square root of 2 find the value of 0.

a. 30º
b. 45º
c. 60º
d. 90º

Questions 20-22: Use a calculator to find the trigonometric value to four decimal places.

20. cos 88º =

a. 0.0354
b. 0.0114
c. 0.9994
d. 0.0349

21. sin 47º =

a. 0.7314
b. 0.6820
c. 0.1236
d. 1.0734

22. tan 8º =

a. 6.7997
b. 0.1405
c. 0.1392
d. 5.6713

26. A riding lawnmower can drive up a 27º incline. In order for a ramp designed to reach a truck bed that is 3 feet above the ground to have a 27º incline, how long should the ramp be?

a. 3.37 ft
b. 5.89 ft
c. 6.61 ft
d. 9 ft

2. Originally Posted by cteague

12. The best reason for statements 3, 5, and 7 in this proof is
1. Theorem 3.1. Alternate interior angles are congruent.
2. Theorem 3.2. Corresponding angles are congruent.
3. Theorem 3.3. Alternate exterior angles are congruent.
4. Theorem 3.4. Interior angles on the same side of the transversal are supplements.
13. The best statement for reason 6 of this proof is
1. and are supplements.
2. (3.) This one
14. The best statement for reason 8 of this proof is
1. and are supplements.
2. (4.) This one
..