Question

A triangle has side lengths of 18 cm, 80 cm, and 81 cm. Classify it as acute, obtuse, or right

Answer 1

With two long, almost equal, sides and a short side, you can visualize it in your head. It is acute.

It certainly is not a right angle, since 18^2 + 80^2 does not equal 81^2.

The law of cosines can be used to answer the problem numerically.
The largest angle C is opposite the longest side, c.
c^2 = a^2 + b^2 -2ab cosC
When c^2 < (a^2 + b^2), as it is here, cosC must be positive, making C an acute angle.

Answer 2

A triangle has side lengths of 9 inches, 18 inches, and 17 inches. What kind of triangle is it?

Answer 3

Its an acute angle

Answer 4

No its not a right triangle.

Answer 5

1) Wayne used this diagram to compute the distance from Ferris, to Dunlap...
25 mi.
2) A triangle has side lengths of 18cm, 80 cm, and 81 cm. Classify it as acute, obtuse, or right.
Acute
3) The area of a square garden is 200 m^2. How long is the diagonal?
20 m
4) A conveyor belt... (I'm not going to type this all down)
14 ft
5) Find the missing value to the nearest hundredth.
tan ___ = 73
89.22
6) Write the ratio for sin A and cos A. The triangle is not drawn to scale.
sin A = 48/50, cos A = 14/50
7) (Sorry you're on your own.)

Answer 6

yep dabi is mostly right except they changed number 5 to 300 m^2.

new answers :
1. Wayne used this diagram to compute......
B-25mi
2: A triangle has side lengths of 18cm, 80cm, and 81cm
C-acute
3:The area of a square garden is 300 m^2. How long is the diagonal?
C- 10_/6m
4: A conveyor belt.... too lazy
C- 14ft
5: Find the missing value to the nearest hundredth. ten_=73
D-89.22
6:Write the rations for sin A and cos A. (Triangle with sides 14, 50, 48)
B- sin A= 48/50, cos A=14/50

Answer 7

senchou is very wrong

Answer 8

last part is on brainly. just search up "find the lengths of the missing sides in the triangle 7 45" and it should be one of the first links

Answer 9

@senchou is 100% WRONG, the 100% CORRECT PERSON is @dabi

Answer 10

Hello

Answer 11

1. 25 mi
2. Acute
3. 20m
4. 14ft
5. 89.22
6. sin A= 48/50, cos A = 14/50

Answer 12

@senchou is right for honors

Answer 13

senchu is correct for honors geometry

Answer 14

dabi is right I got an 100%

Answer 15

Heres the answer to 7 from brainly:
The values of and are required.

The required values are





The given triangle is a right angled triangle.

Two given angles are and

The sum of the angles is

The missing angle is



Since, the two angles are equal the side opposite the angles will also be equal.

So,



Applying the Pythagoras theorem.

Answer 16

Bruh senchou only got 1 wrong so like quit making it sound like they didn't get any Right quit wasting y'alls time just to say there wrong.

Answer 17

Help

Answer 18

Sure! What do you need help with?