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Paul [167]
3 years ago
11

In a 30-60-90 triangle, how many sides do you need to know in order to determine the remaining sides

Mathematics
1 answer:
Sergeeva-Olga [200]3 years ago
6 0
You only need to know one side, you can use , tan, sin, or cos of the angles to find the other 2 sides.
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If PQRS is a rhombus, which statements must be true? Check all that apply.
Aleksandr [31]

Answer:

Options (B), (C) and (F) are correct.

Step-by-step explanation:

Properties of a rhombus,

1). All sides of a rhombus are equal in measure.

2). Both the diagonals of a rhombus are the perpendicular.

3). Diagonals bisect the vertex angles.

By these properties of a rhombus,

Option (B): PR is perpendicular to QS.

Option (C): ∠QPR ≅ ∠SPR

Option (F): PQ ≅ QR

Therefore, options (B), (C) and (F) are correct.

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The isosceles triangle has a perimeter of 7.5 m. Which equation can be used to find the value of x if the shortest side
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Answer:

<u>(7.5-2.1) /2</u>

<u>If the shortest side measures 2.1 m</u>.

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Who Washes? Erica and Aaron, who are siblings, have decided to use a lottery system to decide who will wash dishes every night.
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Given that Erica and AAron,are using lottery system to decide who will wash dishes every night.

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This is possible if mC2 =m and nC2 = n.

Or m = 2+1 =3 and n =3

That for a fair game we must have both colours to be 3.


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