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tigry1 [53]
3 years ago
13

A right triangle has a 30o angle. The leg adjacent to the 30o angle measures 25 inches.

Mathematics
2 answers:
Arisa [49]3 years ago
7 0

Answer:

The length of other leg of right angled triangle ABC is 14.4 in

Step-by-step explanation:

Given a right triangle that has 30° angle. The leg adjacent to 30° is 25 inches.

we have to find the length of the other leg.

In ΔABC, by trigonometric ratios

\tan \theta=\frac{Perpendicular}{Base}

\tan 30=\frac{AB}{BC}

\frac{1}{\sqrt3}=\frac{AB}{25}

AB=\frac{25}{\sqrt3}=14.433\sim 14.4 in

Hence, the length of other leg of right angled triangle ABC is 14.4 in

fiasKO [112]3 years ago
5 0
Tan(30o)= ?/25
25 * tan(30o) = ?
? = 14.4
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3 years ago
Twenty-seven solid gold spherical beads each of radius 3 are melted down and recast into a larger, solid gold sphere. How many u
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===================================================

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This is the new volume and we'll use this to find the radius r of the larger sphere.

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Answer:

Element            Valence electrons

Nitrogen                         5

Silicon                            4

Oxygen                          6

Magnesium                    2

Explanation :

Valence electrons : Valence electrons are the electrons which is present on the outermost shell of the electron.

The given element is nitrogen that belongs to group 15 and the atomic number 7.

The number of electrons present on nitrogen element are 7.

The electronic configuration of nitrogen element is,

The number of valence electrons present on nitrogen element are, 5.

The given element is silicon that belongs to group 14 and the atomic number 14.

The number of electrons present on silicon element are 14.

The electronic configuration of silicon element is,

The number of valence electrons present on silicon element are, 4.

The given element is oxygen that belongs to group 16 and the atomic number 8.

The number of electrons present on oxygen element are 8.

The electronic configuration of oxygen element is,

The number of valence electrons present on oxygen element are, 6.

The given element is magnesium that belongs to group 2 and the atomic number 12.

The number of electrons present on magnesium element are 12.

The electronic configuration of magnesium element is,

The number of valence electrons present on magnesium element are, 2.

Step-by-step explanation:

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