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julia-pushkina [17]
3 years ago
11

Select the reason why these triangles are

Mathematics
1 answer:
Fittoniya [83]3 years ago
7 0

Answer:

B. SAS

Step-by-step explanation:

Ratio of sides equal:

4/2= 6/3

So the 2 sides are congruent and also share same angle between.

B. SAS is the similarity reason

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If you ordered these numbers from greatest to least, what would be the second number in this order?
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Answer:

-2.7

Step-by-step explanation:

The order would be

-3.3, -2.7, -2, -1.1, -1, 0

You can count it by remembering when the number that is the biggest but HAS a negative sign would be at the left and the number that is the biggest with NO negative sign would be at the right

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What is the area of the triangle in centimetres Square?​
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Step-by-step explanation:

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2 years ago
Cuboid ABCDEFGH is shown
gtnhenbr [62]

Answer:

The angle formed between CF and the plane ABCD is approximately 47.14°

Step-by-step explanation:

The given parameters are;

BC = 6.8

DE = 9.3

∠BAC = 52°

We note that the angles formed by the vertex of a cuboid are right triangles, therefore, by trigonometric ratios, we get;

sin∠BAC = BC/(The length of a line drawn from A to C)

∴ The length of the line drawn from A to C = BC/sin∠BAC

The length of the line drawn from A to C = 6.8/sin(52°) ≈ 8.63

∴ AC = 8.63

By trigonometry, we have;

The angle formed between CF and the plane ABCD = Angle ∠ACF

tan\angle X = \dfrac{Opposite \ leg \ length}{Adjacent\ leg \ length}

tan\angle ACF = \dfrac{FA}{AC}

In a cuboid, FA = BG = CH = DE = 9.3

\therefore tan\angle ACF = \dfrac{9.3}{8.63}

\therefore \angle ACF = arctan \left(\dfrac{9.3}{8.63} \right) \approx 47.14^{\circ}

The angle formed between CF and the plane ABCD = Angle ∠ACF ≈ 47.14°

4 0
3 years ago
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