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Likurg_2 [28]
3 years ago
11

A triangle was dilated by a scale factor of 2. If cos a° = three fifths and segment FD measures 6 units, how long is segment DE?

Mathematics
2 answers:
kiruha [24]3 years ago
6 0

Answer:

10 units

Step-by-step explanation:

Given that:

Cos a = 3 /5

From trigonometry ;

Cos θ = Adjacent / hypotenus

Side Adjacent angle a = 3 = FD

Hypotenus = 5 = DE

3 / 5 = FD / DE

FD = 6 units

3/5 = 6/DE

DE * 3/5 = 6

DE = 6 ÷ 3/5

DE = 6 * 5 /3

DE = 30 /3

DE = 10 units

Artist 52 [7]3 years ago
4 0

Answer:

c

Step-by-step explanation:

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Answer:

  no. see below

Step-by-step explanation:

This much of Josh's working is correct:

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At this point Josh apparently overlooked the fact that he needed to take the square root of both sides of the equation. Had he done that, he would have ...

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4 0
2 years ago
PLS HELP c:
Leona [35]

Answer:

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Step-by-step explanation:

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4 0
2 years ago
There are two spinners. Each spinner has 10 equal sectors labeled with the numbers 1 through 10.
Reika [66]

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Step-by-step explanation:

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3 years ago
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bixtya [17]

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Marina86 [1]
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6 0
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