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2 years ago

Who knows this? I need help ASAP

Mathematics

1 answer:

snow_lady [41]2 years ago

6 0

Answer:

A=674.5cm square

Step-by-step explanation:

First, using pythagoras theorem:

Cos x =2/5-90=66.4

This is angle ACD.

Then 1/2 absinC=1/2(5x4)sin66.4

=664.2cm square

Next, find angle DCB by 90-23.578=66.4

And angle CBD by 180-30-66.4=23.578

Use sin23.578=4.58/H

H=11.45cm(length of d)

Now, use 1/2absinC again to find the area of another part of the triangle.

1/2 11.45x4.5sin23.6=10.31cm square

Lastly add them up!

A=664.2-10.31cm =674.5cm square.

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Step-by-step explanation:

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<em>Additional comments</em>

Many triangle solver apps and web sites are available if all you want is an answer.

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2 years ago

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sweet-ann [11.9K]

Answer:

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2 years ago

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andrew11 [14]

Answer:

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3 years ago

Read 2 more answers

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ira [324]

Answer:

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Step-by-step explanation:

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2 years ago

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Ira Lisetskai [31]

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2 years ago