4 years ago

Is any pair of equilateral triangles similar to each other? Why or why not?

1 answer:

7 0

Answer:

They are similar because Since all the sides are equal in each triangle, the ratio of corresponding sides will all be equal

Step-by-step explanation:

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Because the sum of the interior angles of a triangle is 180,

X=180-(65+35)

X=180-100=80

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Mr. Lim read 10 pages. Mr Smith read 15 pages. How many did Mr. Want read?

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3 years ago

The bill for a stay in a hotel was $188 including $15 tax. what percent of the bill was the tax?

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3 years ago

What is the length of missing side JK? Round Answer to nearest tenth please.

zvonat [6]

Given:

Triangle LJK.

LJ = 89 in, LK = 28 in and m∠L = 42°

To find:

The length of missing side JK.

Solution:

LJ = k = 89

LK = j = 28

JK = l = ?

Using law of cosine:

$l^{2}=j^{2}+k^{2}-2 jk \cdot \cos L$

Substitute the given values.

$l^{2}=28^{2}+89^{2}-2 \cdot 28 \cdot 89 \cdot \cos 42^\circ$

$l^{2}=784+7921-4984 \cdot (0.7)$

$l^{2}=784+7921-4984 \cdot (0.7431)$

$l^{2}=784+7921-3703.6$

$l^{2}=5001.4$

Taking square root on both sides.

$l=70.7$

The length of the missing side is 70.7 in.

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4 years ago