Question 1
A) Correctly label the sides of the triangle shown below:
- Hypotenuse: Drop target 1 (the longest side opposite the right angle)
- Leg: Drop target 2 (one of the two sides that form the right angle)
- Leg: Drop target 3 (the remaining side that forms the right angle)
B) Given RP = 24 and DR = 7, the correct way to set up the problem to find DP is:
- x² + 7² = 24² (This applies the Pythagorean theorem, where x is the length of DP).
C) To find DP:
Using the equation from part (B):
\[ x^2 + 7^2 = 24^2 \]
Calculating:
\[ x^2 + 49 = 576 \] \[ x^2 = 576 - 49 \] \[ x^2 = 527 \] \[ x = \sqrt{527} \] \[ x \approx 22.9 \] (rounded to the nearest tenth)
So, DP ≈ 22.9.
Question 2
A) For the triangle shown below, correctly label the sides:
- Hypotenuse: Drop target 1 (longest side opposite the right angle)
- Leg: Drop target 2 (one of the sides forming the right angle)
- Leg: Drop target 3 (the remaining side)
B) If CE = 29 and AC = 20, the equation that can be used to find AE is:
- 20² + x² = 29² (applying the Pythagorean theorem).
C) To find AE:
Using the equation from part (B):
\[ 20^2 + x^2 = 29^2 \]
Calculating:
\[ 400 + x^2 = 841 \] \[ x^2 = 841 - 400 \] \[ x^2 = 441 \] \[ x = \sqrt{441} \] \[ x = 21 \]
So, AE = 21.
Question 3
A) For the triangle pictured above, which side is the hypotenuse?
The side labeled 14.7 km (hypotenuse is the longest side).
B) To find the value of x using the Pythagorean theorem:
-
Assuming the legs of the triangle are labeled as 11.9 km and x, we can set up: \[ 11.9^2 + x^2 = 14.7^2 \]
-
Solving for x: \[ x^2 = 14.7^2 - 11.9^2 \] \[ x^2 = 216.09 - 141.61 \] \[ x^2 = 74.48 \] \[ x = \sqrt{74.48} \] \[ x \approx 8.6 \] km (rounded to the nearest tenth)
So, x ≈ 8.6 km.
Question 4
A) Using YS = 6.3 km and YL = 15.4 km, to find LS:
Using the Pythagorean theorem:
-
Let LS = x. \[ YS^2 + LS^2 = YL^2 \] \[ (6.3)^2 + x^2 = (15.4)^2 \]
-
Calculating: \[ 39.69 + x^2 = 237.16 \] \[ x^2 = 237.16 - 39.69 \] \[ x^2 = 197.47 \] \[ x = \sqrt{197.47} \] \[ x \approx 14.0 \] km (rounded to the nearest tenth)
So, LS ≈ 14.0 km.
Question 5
A) Using JE = 4.8 and EW = 28.6 to find JW:
Using the Pythagorean theorem:
-
Let JW = x. \[ JE^2 + JW^2 = EW^2 \] \[ (4.8)^2 + x^2 = (28.6)^2 \]
-
Calculating: \[ 23.04 + x^2 = 817.96 \] \[ x^2 = 817.96 - 23.04 \] \[ x^2 = 794.92 \] \[ x = \sqrt{794.92} \] \[ x \approx 28.2 \] (rounded to the nearest tenth)
So, JW ≈ 28.2.
Question 6
A) If one of the legs measures 10 cm and the hypotenuse measures 50.5 cm:
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Let the unknown leg be x. We will use the Pythagorean theorem: \[ 10^2 + x^2 = 50.5^2 \]
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Calculating: \[ 100 + x^2 = 2550.25 \] \[ x^2 = 2550.25 - 100 \] \[ x^2 = 2450.25 \] \[ x = \sqrt{2450.25} \] \[ x \approx 49.5 \] (rounded to the nearest tenth)
So, the length of the other leg is approximately 49.5 cm.