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Sergio039 [100]
3 years ago
14

Solve for x. round to the nearest tenth. If necessary​

Mathematics
2 answers:
Blababa [14]3 years ago
8 0

Answer:

x = 14

Step-by-step explanation:

Given :-

  • θ, angle = 30°
  • Hypotenuse = x
  • opposite side = 7

Solution :-

Since, it's right triangle we can use trignometery equations;

In this case we need to use sine equation.

sin θ = opposite side / hypotenuse

plug the values

sin 30° = 7 / x.

cross multiplication

x = 7 / sin 30°

Evaluate

x = 7 / 0.5

x = 14

Softa [21]3 years ago
4 0

Answer:

x = 14

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

<u>Trigonometry</u>

  • [Right Triangles Only] SOHCAHTOA  
  • [Right Triangles Only] sinθ = opposite over hypotenuse<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify variables</em>

Angle θ = 30°

Opposite Leg = 7

Hypotenuse = <em>x</em>

<em />

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Substitute in variables [sine]:                                                                           sin(30°) = 7/x
  2. [Multiplication Property of Equality] Cross-multiply:                                       x = 7/sin(30°)
  3. Evaluate:                                                                                                           x = 14
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