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In triangle ABC, the measure of angle B is 90°, the length o
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Updated on: 12 Jul 2021, 05:43
Updated on: 12 Jul 2021, 05:43
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47% (02:09) correct
52% (01:54) wrong based on 148 sessions
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In triangle ABC, the measure of angle B is 90°, the length of side AB is 4, and the length of side BC is x. If the length of hypotenuse AC is between 4 and 8, which of the following could be the value of x ?
Indicate \(all\) such values.
❑ 1
❑ 2
❑ 3
❑ 4
❑ 5
❑ 6
Indicate \(all\) such values.
❑ 1
❑ 2
❑ 3
❑ 4
❑ 5
❑ 6
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Official Answer
A,B,C,D,E,F
Re: In triangle ABC, the measure of angle B is 90°, the length o
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27 Nov 2017, 16:46
27 Nov 2017, 16:46
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Look at the figure below:
Length of side AB is 4, and the length of side BC is xand AC is between 4 and 8. There can be many triangles that satify this condition.
On one extreme when AC is almost 4. Then the the triangle becomes almost the line AB and \(x\) is almost 0.
On the other hand when AC is 8 then \(x=\sqrt{8^2-4^2} \approx 6.9\).
So all values from 0 to 6.9 form a right triangle. Hence all options are correct!
right.jpg [ 13.28 KiB | Viewed 43216 times ]
Length of side AB is 4, and the length of side BC is xand AC is between 4 and 8. There can be many triangles that satify this condition.
On one extreme when AC is almost 4. Then the the triangle becomes almost the line AB and \(x\) is almost 0.
On the other hand when AC is 8 then \(x=\sqrt{8^2-4^2} \approx 6.9\).
So all values from 0 to 6.9 form a right triangle. Hence all options are correct!
Show: :: img
Attachment:
right.jpg [ 13.28 KiB | Viewed 43216 times ]
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Re: In triangle ABC, the measure of angle B is 90°, the length o
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12 Jul 2021, 05:40
12 Jul 2021, 05:40
3
Carcass wrote:
In triangle ABC, the measure of angle B is 90°, the length of side AB is 4, and the length of side BC is x. If the length of hypotenuse AC is between 4 and 8, which of the following could be the value of x ?
Indicate \(all\) such values.
❑ 1
❑ 2
❑ 3
❑ 4
❑ 5
❑ 6
Indicate \(all\) such values.
❑ 1
❑ 2
❑ 3
❑ 4
❑ 5
❑ 6
I would solve the question by testing each choice.
A) x = 1
The Pythagorean theorem tells us that 4² + 1² = hypotenuse²
Solve to get: Hypotenuse = √17
Since √17 is between 4 and 8, x COULD equal 1
B) x = 2
The Pythagorean theorem tells us that 4² + 2² = hypotenuse²
Solve to get: Hypotenuse = √20
Since √20 is between 4 and 8, x COULD equal 2
C) x = 3
The Pythagorean theorem tells us that 4² + 3² = hypotenuse²
Solve to get: Hypotenuse = √25
Since √25 is between 4 and 8, x COULD equal 3
D) x = 4
The Pythagorean theorem tells us that 4² + 4² = hypotenuse²
Solve to get: Hypotenuse = √32
Since √32 is between 4 and 8, x COULD equal 4
E) x = 5
The Pythagorean theorem tells us that 4² + 5² = hypotenuse²
Solve to get: Hypotenuse = √41
Since √41 is between 4 and 8, x COULD equal 5
F) x = 6
The Pythagorean theorem tells us that 4² + 6² = hypotenuse²
Solve to get: Hypotenuse = √52
Since √52 is between 4 and 8, x COULD equal 6
Answer: A, B, C, D, E and F
thanks
