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natita [175]
3 years ago
6

ΔDEF rotates 90° clockwise about point A to create ΔD 'E 'F. Therefore, which equation must be true?

Mathematics
2 answers:
____ [38]3 years ago
7 0
Rotation is a type of transformation refered to a in which the shape of the original object is preserved and the angle of rotation is constanf for all the parts of the body.

Thus, when <span>ΔDEF rotates 90° clockwise about point A to create ΔD 'E 'F.

</span><span>m∠EAE ' = m∠FAF '</span>
mixer [17]3 years ago
3 0

Answer:

m∠EAE ' = m∠FAF '

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Ben rolls a number cube 50 times. He records the result of each roll in the table below. Based on the data, which statement is t
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Answer:

Ben will roll an even number about 560 times if the number cube is rolled 1,000 times.

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3 years ago
isabella is covering a square tabletop with square mossaic tiles.the tabletop is 2ft. long and 2ft.wide.each tile is 1/4 in.long
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Convert the feet to inches first.  2 ft = 24 inches.  We must divide this total length by the length of each tile to determine how many tiles will fit across the tabletop:

24 ÷ (1/4) = (24/1) ÷ (1/4) = (24/1) × (4/1) = 96/1 = 96

96 tiles will fit across the tabletop.
Since the tabletop is as long as it is wide, that means we will have 96 rows of 96 tiles:
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5 0
4 years ago
Plz help need to find both answers
saul85 [17]

Answer:

I hope it helped u.

Step-by-step explanation:

7 0
4 years ago
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5 0
3 years ago
(a) If tan A=x/y<br>prove that: y.cos2A +x.sin2A= y.<br>Please help me..​
katrin2010 [14]

Answer:  see proof below

<u>Step-by-step explanation:</u>

Use the following Double Angle Identities: cos 2A = 1 - 2sin²A

                                                                        sin 2A = 2sinA · cosA

\text{Given:}\quad \tan A = \dfrac{x}{y}

<u>Proof LHS = RHS</u>

y cos 2A + x sin 2A = y

                  x sin 2A = y - y cos 2A

                  x sin 2A = y(1 - cos 2A)

                  \dfrac{x}{y}=\dfrac{1-\cos2A}{sin\ 2A}

                  \dfrac{x}{y}=\dfrac{1-(1-2sin^2A)}{2\sin A\cdot \cos A}

                  \dfrac{x}{y}=\dfrac{2sin^2A}{2\sin A\cdot \cos A}

                  \dfrac{x}{y}=\dfrac{\sin A}{\cos A}

                  \dfrac{x}{y}=\tan A}

This is a TRUE statement since it was given that  \tan A = \dfrac{x}{y}  

                     

4 0
3 years ago
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