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Levart [38]
3 years ago
13

There are 3 ways you can prove triangles similar without having to use all sides and angles?

Mathematics
1 answer:
bagirrra123 [75]3 years ago
5 0

You can tell if they're similar if they:

1) Have two of the same angles

2) If two pairs of corresponding angles in a pair of triangles are congruent.

3) If they are the same shape

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What are the next three terms of the arithmetic sequence -18, -13, -8, -3,…?
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<span>-18, -13, -8, -3,…
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3 years ago
Help, please!! What is mA?
Inga [223]

Answer:

38°

Step-by-step explanation:

The measure of required angle can be obtained by using cosine law.

From the given triangle we find that:

a = 5, b = 3, c = 7,

Since,

cos (A) = (b^2 +c^2 - a^2) /2bc

Therefore,

cos (A) = (3^2 + 7^2 - 5^2) /(2*3*7)

cos (A) = (9 + 49 - 25) /(42)

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A = 38.213210675°

A = 38°

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