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schepotkina [342]
4 years ago
11

Does a equilateral triangle have rotational symmetry if so identify the angle of rotation

Mathematics
1 answer:
nydimaria [60]4 years ago
5 0
Yes it does and 180 degrees
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5 x 10 is 50 then 50 + 11 is 61 so I think it would be 61 ;)
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10 POINTS. I WILL MARK BRAINLIEST 
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1. BC = 9 tan 45 = 9 ft
AC = 9 tan 60 = 9 sqrt(3) ft
AB = AC - BC = 9sqrt3 - 9 ft ~ 6.59 ft

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The ages of George and Genemy are in ratio 5:7 . Four years from now the ratio of their ages will be 3:4 .Find their present age
DedPeter [7]

Answer:

Below in bold.

Step-by-step explanation:

Let x be George's age and y be Genemy's age.

x/y = 5/7

(x + 4)/ (y + 4) = 3/4

From equation 1, y = 7x/5 = 1.4x so substituting in equation 2 :

(x + 4)/ (1.4x + 4) = 3/4

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3 years ago
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Find sin (b) in the triangle
Gala2k [10]

Answer:

sinβ = 15/17

General Formulas and Concepts:

<u>Math</u>

  • Simplifying

<u>Trigonometry</u>

  • [Right Triangles Only] SOHCAHTOA
  • [Right Triangles Only] sinθ = opposite over hypotenuse

Step-by-step explanation:

<u>Step 1: Define</u>

Angle θ = β

Opposite Leg = 15

Hypotenuse Leg = 17

<u>Step 2: Find</u>

  1. Substitute in variables [sine]:                                                                          sinβ = 15/17
5 0
3 years ago
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