#does anyone know what to do here ive been stuck

33 messages · Page 1 of 1 (latest)

fathom cape
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pls and ty

somber sedgeBOT
fathom cape
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i tried doing cosine rule to get the angle opposite to A and got the area with 1/2absin C

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and im trying to substitute the area to 1/2 bh is that right

cerulean locust
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assuming A is 5 you could then just use sin=opposite/7

signal obsidian
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like this

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@fathom cape does this help you?

wheat verge
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||By Heron's the triangle's area is 10√3. Then ½×8×h=10√3=>h=5√3/2.||

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What is the area of that triangle?

restive haven
# signal obsidian

This is the correct solution , and the answer in decimal form would be 4.33.

dull current
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Listen…. You need to take the length x and 8 -x . Then do Pythagoras for both the triangles. For sure both the triangles have same height, hence find x. Then put the value of x and find height. Hope this helps you.

mental python
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here's the solution:
let's say the triangle is named ABC with the height as AD=h
BD is 'x'(let's say)

in Rt.∠ΔABD, using Pythagoras Theorem, we get
h² + x² = 25 ---(1)

using Pythagoras Theorem in Rt.∠ΔACD, we get,
x = 2.5 (upon simplifying and using (1))

now use the value of x (x=2.5) in (1) and you the answer
h² = 90/4
h = (5√10) / 2
h ≈ 4.33
that's the answer

mental python
restive haven
vague violet
# fathom cape pls and ty

Solution

Let’s solve for the height of the triangle step-by-step:

The image shows a triangle with side lengths a=5 cm, b=7 cm, and base c=8 cm.

The height h is dropped perpendicularly to the base c, dividing the base into two segments, let's call them x and 8−x.

This creates two right-angled triangles.

We can use the Pythagorean theorem on both right-angled triangles:

Triangle 1 (left side):
x2+h2=52
x2+h2=25
Triangle 2 (right side):
(8−x)2+h2=72
(8−x)2+h2=49
Step 1:

Express h2 from the first equation:
h2=25−x2
Step 2:

Substitute this expression for h2 into the second equation:
(8−x)2+(25−x2)=49
Step 3:

Expand and solve for x.

First, expand (8−x)2=64−16 x+x2:
(64−16 x+x2)+25−x2=49
Step 4:

Simplify the equation by combining like terms.

Notice that x2 and −x2 cancel out:
64−16 x+25=49
89−16 x=49
Step 5:

Isolate the term with x:
89−49=16 x
40=16 x
Step 6:

Solve for x:
x=1640​
x=25​=2.5 cm
Step 7:

Substitute the value of x back into the equation for h2 from Step 1:

h2=25−x2
h2=25−(2.5)2
h2=25−6.25
h2=18.75
Step 8:

Calculate h by taking the square root:
h=18.75​
Step 9:

Calculate the numerical value and round to two decimal places as requested:
h≈4.330127...
h≈4.33 cm

Final Answer:
h≈4.33 cm

vague violet
pearl tangle
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Use heron's formula

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That's way easy

wheat verge
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That's what I did

wheat verge
pearl tangle
pearl tangle
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I thought it's just a black line

wheat verge
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Oh

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Lol

pearl tangle
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Yh fr

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Then I clicked it , I saw the answer

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Lmao

fathom cape
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Thank youuu

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