4 years ago

HELP PICTURE IS SHOWN

Mathematics

1 answer:

Marrrta [24]4 years ago

6 0

C hope it helps .....................

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Describe two different sequences of transformations that will map ABCD to EFGH.

Harlamova29_29 [7]

The orientation of the figure has been changed by 90°, but the points are not all rotated around the same center. Translation is involved.

Translation before rotation:
.. translate down 5 units
.. rotate counterclockwise 90° about the origin

Translation after rotation:
.. rotate counterclockwise 90° about the origin
.. translate right 5 units

This can also be accomplished by a double reflection.
.. reflect across the line y=x
.. reflect across the line x=2.5

Or,
.. reflect across the line y=2.5
.. reflect across the line y=x

3 0

4 years ago

Sin 3A = cos (A – 70ᵒ), where A is an acute angle then<br> A = ________________ ᵒ.

romanna [79]

Answer:

A = 40°

Step-by-step explanation:

$\sin 3A = \cos (A – 70ᵒ) \\ \\ \cos(90 \degree - 3A) = \cos (A – 70ᵒ) \\ \{\because \: \cos(90 \degree - \theta) = \sin \theta \} \\ \\ (90 \degree - 3A) = (A – 70ᵒ) \\ \\ 90 \degree + 70ᵒ = 3A + A \\ \\ 160 \degree = 4A \\ \\ A = \frac{160 \degree}{4} \\ \\ \huge \red{ \boxed{A = 40 \degree}}$