3 years ago

Which BEST describes the construction of a triangle if given one side length of 8 cm and one 90 ° angle?

Mathematics

1 answer:

professor190 [17]3 years ago

8 0

1. it is right-angled triangle because it has a 90 degree angle.

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From a height of 50 meters above sea level on a cliff, two ships are sighted due west. The angles of depression are 61° and 28°.

Olenka [21]

Answer:

The ships are 66 meters apart.

Step-by-step explanation:

For the sake of convenience, let us label ships A and B

As shown in the figure, the distances to the ships from right triangles.

The distance to the ship A is $d_1$ and it is given by

$tan (61^o)= \dfrac{50}{d_1}$

$d_1=\dfrac{50}{tan (61^o)}$

$\boxed{d_1= 27.71m}$

And the distance to the ship B is $d_2$ and is given by

$tan (28^o)= \dfrac{50}{d_2}$

$d_2=\dfrac{50}{tan (28^o)}$

$\boxed{ d_2=94.04m}$

Therefore, the distance $d$ between the ships A and B is

$d= d_2-d_1=94.04-27.7\\\\\boxed{d=66m}$

In other words, the ships are 66 meters apart.

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Number one: Just plot down on the number like the numbers you have. Just took the test for this.

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2 years ago

What figure has properties of all sides congruent and all right angles?

andre [41]

A. Rectangle

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Tina says that 3.4 x 105 is greater than 8.25 x 104. Is she correct? Justify your answer.

Anna71 [15]

Answer:

No, Tina is not correct since 3.4 × 105 = 357 and 8.25 × 104 = 858

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Answer:

x=90 degree

y=30 degree

Step-by-step explanation:

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